The example 'verdure' does not seem to work.

[polina-c]

1. After uploading a picture, application does not move to next step and there is an authentication error in server console. If it is an issue with API key, error handling should be nicer.
2. The button 'Take a Photo' does not take any photo: "Bad state: This implementation of ImagePickerPlatform requires a "cameraDelegate" in order to use ImageSource.camera." If it is limitation of the platform, we should remove platfroms we do not support.

Platform: Mac (maybe others too).

See video:

Screen.Recording.2026-04-17.at.9.09.10.AM.mov

[polina-c]

Client console:

[ERROR:flutter/runtime/dart_vm_initializer.cc(40)] Unhandled Exception: Bad state: This implementation of ImagePickerPlatform requires a "cameraDelegate" in order to use ImageSource.camera
#0      CameraDelegatingImagePickerPlatform.getImageFromSource (package:image_picker_platform_interface/src/platform_interface/image_picker_platform.dart:374:9)
#1      ImagePickerMacOS.getImageFromSource (package:image_picker_macos/image_picker_macos.dart:102:22)
#2      ImagePicker.pickImage (package:image_picker/image_picker.dart:89:21)
#3      UploadPhotoScreen._pickAndSendImage (package:verdure/features/screens/upload_photo_screen.dart:107:39)
#4      UploadPhotoScreen.build.<anonymous closure> (package:verdure/features/screens/upload_photo_screen.dart:89:25)
#5      _InkResponseState.handleTap (package:flutter/src/material/ink_well.dart:1224:21)
#6      GestureRecognizer.invokeCallback (package:flutter/src/gestures/recognizer.dart:345:24)
#7      TapGestureRecognizer.handleTapUp (package:flutter/src/gestures/tap.dart:758:11)
#8      BaseTapGestureRecognizer._checkUp (package:flutter/src/gestures/tap.dart:383:5)
#9      BaseTapGestureRecognizer.handlePrimaryPointer (package:flutter/src/gestures/tap.dart:314:7)
#10     PrimaryPointerGestureRecognizer.handleEvent (package:flutter/src/gestures/recognizer.dart:721:9)
#11     PointerRouter._dispatch (package:flutter/src/gestures/pointer_router.dart:97:12)
#12     PointerRouter._dispatchEventToRoutes.<anonymous closure> (package:flutter/src/gestures/pointer_router.dart:140:9)
#13     _LinkedHashMapMixin.forEach (dart:_compact_hash:772:13)
#14     PointerRouter._dispatchEventToRoutes (package:flutter/src/gestures/pointer_router.dart:138:18)
#15     PointerRouter.route (package:flutter/src/gestures/pointer_router.dart:128:7)
#16     GestureBinding.handleEvent (package:flutter/src/gestures/binding.dart:528:19)
#17     GestureBinding.dispatchEvent (package:flutter/src/gestures/binding.dart:498:22)
#18     RendererBinding.dispatchEvent (package:flutter/src/rendering/binding.dart:473:11)
#19     GestureBinding._handlePointerEventImmediately (package:flutter/src/gestures/binding.dart:437:7)
#20     GestureBinding.handlePointerEvent (package:flutter/src/gestures/binding.dart:394:5)
#21     GestureBinding._flushPointerEventQueue (package:flutter/src/gestures/binding.dart:341:7)
#22     GestureBinding._handlePointerDataPacket (package:flutter/src/gestures/binding.dart:308:9)
#23     _invoke1 (dart:ui/hooks.dart:439:13)
#24     PlatformDispatcher._dispatchPointerDataPacket (dart:ui/platform_dispatcher.dart:470:7)
#25     _dispatchPointerDataPacket (dart:ui/hooks.dart:374:31)

[polina-c]

Server console:

09:07:37 - LiteLLM:INFO: utils.py:3422 - 
LiteLLM completion() model= gemini-2.5-flash; provider = vertex_ai
INFO:LiteLLM:
LiteLLM completion() model= gemini-2.5-flash; provider = vertex_ai
09:07:46 - LiteLLM:ERROR: vertex_llm_base.py:494 - Failed to load vertex credentials. Check to see if credentials containing partial/invalid information. Error: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
ERROR:LiteLLM:Failed to load vertex credentials. Check to see if credentials containing partial/invalid information. Error: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

Give Feedback / Get Help: https://github.com/BerriAI/litellm/issues/new
LiteLLM.Info: If you need to debug this error, use `litellm._turn_on_debug()'.

ERROR:a2a.server.request_handlers.default_request_handler:Background task cleanup_producer:2dc28963-36b6-4fce-8a42-0fb3b894e2b7 failed
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    response = await init_response
               ^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    _auth_header, vertex_project = await self._ensure_access_token_async(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    return await asyncify(self.get_access_token)(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<2 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    return await anyio.to_thread.run_sync(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    result = context.run(func, *args)
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 420, in _on_done
    completed.result()
    ~~~~~~~~~~~~~~~~^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    result = await func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 438, in _cleanup_producer
    await producer_task
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    result = await func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 196, in _run_event_stream
    await self.agent_executor.execute(request, queue)
  File "/Users/polina/_/genui/examples/verdure/server/a2ui_extension/src/a2ui_ext/__init__.py", line 79, in execute
    await self._delegate.execute(context, event_queue, use_ui=use_ui)
  File "/Users/polina/_/genui/examples/verdure/server/verdure/agent_executor.py", line 223, in execute
    async for item in agent.stream(query, task.context_id, image_part=image_part):
    ...<79 lines>...
        break
  File "/Users/polina/_/genui/examples/verdure/server/verdure/agent.py", line 199, in stream
    async for event in self._runner.run_async(
    ...<21 lines>...
            }
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 443, in run_async
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 427, in _run_with_trace
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 653, in _exec_with_plugin
    async for event in agen:
    ...<9 lines>...
      yield (modified_event if modified_event else event)
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 416, in execute
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/base_agent.py", line 294, in run_async
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/llm_agent.py", line 435, in _run_async_impl
    async for event in agen:
    ...<5 lines>...
        should_pause = True
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 356, in run_async
    async for event in agen:
      last_event = event
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 433, in _run_one_step_async
    async for llm_response in agen:
    ...<13 lines>...
          yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 804, in _call_llm_async
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 788, in _call_llm_with_tracing
    async for llm_response in agen:
    ...<12 lines>...
      yield llm_response
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 998, in _run_and_handle_error
    raise model_error
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 982, in _run_and_handle_error
    async for response in agen:
      yield response
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 1080, in generate_content_async
    response = await self.llm_client.acompletion(**completion_args)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 125, in acompletion
    return await acompletion(
           ^^^^^^^^^^^^^^^^^^
    ...<4 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1638, in wrapper_async
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1484, in wrapper_async
    result = await original_function(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 617, in acompletion
    raise exception_type(
          ~~~~~~~~~~~~~~^
        model=model,
        ^^^^^^^^^^^^
    ...<3 lines>...
        extra_kwargs=kwargs,
        ^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2323, in exception_type
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2299, in exception_type
    raise APIConnectionError(
    ...<8 lines>...
    )
litellm.exceptions.APIConnectionError: litellm.APIConnectionError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    response = await init_response
               ^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    _auth_header, vertex_project = await self._ensure_access_token_async(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    return await asyncify(self.get_access_token)(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<2 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    return await anyio.to_thread.run_sync(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    result = context.run(func, *args)
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

ERROR:    Exception in ASGI application
  + Exception Group Traceback (most recent call last):
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/uvicorn/protocols/http/h11_impl.py", line 403, in run_asgi
  |     result = await app(  # type: ignore[func-returns-value]
  |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |         self.scope, self.receive, self.send
  |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |     )
  |     ^
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/uvicorn/middleware/proxy_headers.py", line 60, in __call__
  |     return await self.app(scope, receive, send)
  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/applications.py", line 113, in __call__
  |     await self.middleware_stack(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/errors.py", line 186, in __call__
  |     raise exc
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/errors.py", line 164, in __call__
  |     await self.app(scope, receive, _send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/cors.py", line 85, in __call__
  |     await self.app(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/exceptions.py", line 63, in __call__
  |     await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
  |     raise exc
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 42, in wrapped_app
  |     await app(scope, receive, sender)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 716, in __call__
  |     await self.middleware_stack(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 736, in app
  |     await route.handle(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 290, in handle
  |     await self.app(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 78, in app
  |     await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
  |     raise exc
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 42, in wrapped_app
  |     await app(scope, receive, sender)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 76, in app
  |     await response(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/sse_starlette/sse.py", line 255, in __call__
  |     async with anyio.create_task_group() as task_group:
  |                ~~~~~~~~~~~~~~~~~~~~~~~^^
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 781, in __aexit__
  |     raise BaseExceptionGroup(
  |         "unhandled errors in a TaskGroup", self._exceptions
  |     ) from None
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
    | Traceback (most recent call last):
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    |     response = await init_response
    |                ^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    |     _auth_header, vertex_project = await self._ensure_access_token_async(
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    |     return await asyncify(self.get_access_token)(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<2 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    |     return await anyio.to_thread.run_sync(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    |     return await get_async_backend().run_sync_in_worker_thread(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |         func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    |     return await future
    |            ^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    |     result = context.run(func, *args)
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    |     _credentials, credential_project_id = self.load_auth(
    |                                           ~~~~~~~~~~~~~~^
    |         credentials=credentials, project_id=project_id
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    |     creds, creds_project_id = self._credentials_from_default_auth(
    |                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
    |         scopes=["https://www.googleapis.com/auth/cloud-platform"]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    |     return google_auth.default(scopes=scopes)
    |            ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    |     raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
    | google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
    | 
    | During handling of the above exception, another exception occurred:
    | 
    | Traceback (most recent call last):
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 420, in _on_done
    |     completed.result()
    |     ~~~~~~~~~~~~~~~~^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    |     result = await func(*args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 438, in _cleanup_producer
    |     await producer_task
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    |     result = await func(*args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 196, in _run_event_stream
    |     await self.agent_executor.execute(request, queue)
    |   File "/Users/polina/_/genui/examples/verdure/server/a2ui_extension/src/a2ui_ext/__init__.py", line 79, in execute
    |     await self._delegate.execute(context, event_queue, use_ui=use_ui)
    |   File "/Users/polina/_/genui/examples/verdure/server/verdure/agent_executor.py", line 223, in execute
    |     async for item in agent.stream(query, task.context_id, image_part=image_part):
    |     ...<79 lines>...
    |         break
    |   File "/Users/polina/_/genui/examples/verdure/server/verdure/agent.py", line 199, in stream
    |     async for event in self._runner.run_async(
    |     ...<21 lines>...
    |             }
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 443, in run_async
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 427, in _run_with_trace
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 653, in _exec_with_plugin
    |     async for event in agen:
    |     ...<9 lines>...
    |       yield (modified_event if modified_event else event)
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 416, in execute
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/base_agent.py", line 294, in run_async
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/llm_agent.py", line 435, in _run_async_impl
    |     async for event in agen:
    |     ...<5 lines>...
    |         should_pause = True
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 356, in run_async
    |     async for event in agen:
    |       last_event = event
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 433, in _run_one_step_async
    |     async for llm_response in agen:
    |     ...<13 lines>...
    |           yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 804, in _call_llm_async
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 788, in _call_llm_with_tracing
    |     async for llm_response in agen:
    |     ...<12 lines>...
    |       yield llm_response
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 998, in _run_and_handle_error
    |     raise model_error
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 982, in _run_and_handle_error
    |     async for response in agen:
    |       yield response
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 1080, in generate_content_async
    |     response = await self.llm_client.acompletion(**completion_args)
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 125, in acompletion
    |     return await acompletion(
    |            ^^^^^^^^^^^^^^^^^^
    |     ...<4 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1638, in wrapper_async
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1484, in wrapper_async
    |     result = await original_function(*args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 617, in acompletion
    |     raise exception_type(
    |           ~~~~~~~~~~~~~~^
    |         model=model,
    |         ^^^^^^^^^^^^
    |     ...<3 lines>...
    |         extra_kwargs=kwargs,
    |         ^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2323, in exception_type
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2299, in exception_type
    |     raise APIConnectionError(
    |     ...<8 lines>...
    |     )
    | litellm.exceptions.APIConnectionError: litellm.APIConnectionError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
    | Traceback (most recent call last):
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    |     response = await init_response
    |                ^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    |     _auth_header, vertex_project = await self._ensure_access_token_async(
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    |     return await asyncify(self.get_access_token)(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<2 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    |     return await anyio.to_thread.run_sync(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    |     return await get_async_backend().run_sync_in_worker_thread(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |         func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    |     return await future
    |            ^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    |     result = context.run(func, *args)
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    |     _credentials, credential_project_id = self.load_auth(
    |                                           ~~~~~~~~~~~~~~^
    |         credentials=credentials, project_id=project_id
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    |     creds, creds_project_id = self._credentials_from_default_auth(
    |                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
    |         scopes=["https://www.googleapis.com/auth/cloud-platform"]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    |     return google_auth.default(scopes=scopes)
    |            ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    |     raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
    | google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
    | 
    +------------------------------------
INFO:     127.0.0.1:59730 - "GET /.well-known/agent-card.json HTTP/1.1" 200 OK
INFO:     127.0.0.1:59734 - "POST / HTTP/1.1" 200 OK
INFO:a2ui_ext:--- Client requested extensions: {'https://a2ui.org/a2a-extension/a2ui/v0.9'} ---
INFO:a2ui_ext:--- a2ui UI EXTENSION ACTIVATED ---
INFO:agent_executor:--- AGENT_EXECUTOR: A2UI extension is active. Using UI agent. ---
INFO:agent_executor:--- AGENT_EXECUTOR: Processing 2 message parts ---
INFO:agent_executor:  Part 0: Found FilePart: bytes: eyJhY3Rpb24iOnsibmFtZSI6InN1Ym1pdF9kZXRhaWxzIiwic291cmNlQ29tcG9uZW50SWQiOiJ1cGxvYWRfYnV0dG9uIiwiY29u...
INFO:agent_executor:  Extracting 116 bytes
INFO:agent_executor:  Part 0: FilePart mime_type: 'application/json'
INFO:agent_executor:  Part 0: Found application/json FilePart. Parsing as UI event.
INFO:agent_executor:  Part 0: Found a2ui UI ClientEvent payload in FilePart.
INFO:agent_executor:  Part 1: Found FilePart: bytes: /9j/4AAQSkZJRgABAQAAAQABAAD/4QlERXhpZgAASUkqAAgAAAACADEBAgAHAAAAJgAAAGmHBAABAAAALgAAAAAAAABQaWNhc2EA...
INFO:agent_executor:  Extracting 12024 bytes
INFO:agent_executor:  Part 1: FilePart mime_type: 'image/jpeg'
INFO:agent_executor:  Part 1: Set image_part to a image/jpeg image.
INFO:agent_executor:  Saved FilePart to /Users/polina/_/genui/examples/verdure/server/verdure/images/uploads/29aec7d2-12b0-49a1-839b-2b91615e4bae.jpg, URL: http://localhost:10002/images/uploads/29aec7d2-12b0-49a1-839b-2b91615e4bae.jpg
INFO:agent_executor:Received a2ui ClientEvent: {'name': 'submit_details', 'sourceComponentId': 'upload_button', 'context': {}}
INFO:agent_executor:Handling 'submit_details' action.
INFO:agent_executor:Using image URL from ImagePart: http://localhost:10002/images/uploads/29aec7d2-12b0-49a1-839b-2b91615e4bae.jpg
INFO:agent_executor:Handling 'submit_details' action.
INFO:agent_executor:=====================================================================
INFO:agent_executor:--- AGENT_EXECUTOR: Sending this query to LLM: 'USER_SUBMITTED_DETAILS: Description: 'No description', Image: 'http://localhost:10002/images/uploads/29aec7d2-12b0-49a1-839b-2b91615e4bae.jpg'' ---
INFO:agent_executor:=====================================================================
INFO:agent:--- LandscapeAgent.stream: Attempt 1/2 for session c1d5a752-76c0-49fb-8de3-a4ca341604fd ---
INFO:agent:Adding image bytes to message
09:09:25 - LiteLLM:INFO: utils.py:3422 - 
LiteLLM completion() model= gemini-2.5-flash; provider = vertex_ai
INFO:LiteLLM:
LiteLLM completion() model= gemini-2.5-flash; provider = vertex_ai
09:09:34 - LiteLLM:ERROR: vertex_llm_base.py:494 - Failed to load vertex credentials. Check to see if credentials containing partial/invalid information. Error: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
ERROR:LiteLLM:Failed to load vertex credentials. Check to see if credentials containing partial/invalid information. Error: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

Give Feedback / Get Help: https://github.com/BerriAI/litellm/issues/new
LiteLLM.Info: If you need to debug this error, use `litellm._turn_on_debug()'.

ERROR:a2a.server.request_handlers.default_request_handler:Background task cleanup_producer:ea9f6253-7b00-4f9b-91f1-c25473954257 failed
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    response = await init_response
               ^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    _auth_header, vertex_project = await self._ensure_access_token_async(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    return await asyncify(self.get_access_token)(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<2 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    return await anyio.to_thread.run_sync(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    result = context.run(func, *args)
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 420, in _on_done
    completed.result()
    ~~~~~~~~~~~~~~~~^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    result = await func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 438, in _cleanup_producer
    await producer_task
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    result = await func(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 196, in _run_event_stream
    await self.agent_executor.execute(request, queue)
  File "/Users/polina/_/genui/examples/verdure/server/a2ui_extension/src/a2ui_ext/__init__.py", line 79, in execute
    await self._delegate.execute(context, event_queue, use_ui=use_ui)
  File "/Users/polina/_/genui/examples/verdure/server/verdure/agent_executor.py", line 223, in execute
    async for item in agent.stream(query, task.context_id, image_part=image_part):
    ...<79 lines>...
        break
  File "/Users/polina/_/genui/examples/verdure/server/verdure/agent.py", line 199, in stream
    async for event in self._runner.run_async(
    ...<21 lines>...
            }
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 443, in run_async
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 427, in _run_with_trace
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 653, in _exec_with_plugin
    async for event in agen:
    ...<9 lines>...
      yield (modified_event if modified_event else event)
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 416, in execute
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/base_agent.py", line 294, in run_async
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/llm_agent.py", line 435, in _run_async_impl
    async for event in agen:
    ...<5 lines>...
        should_pause = True
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 356, in run_async
    async for event in agen:
      last_event = event
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 433, in _run_one_step_async
    async for llm_response in agen:
    ...<13 lines>...
          yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 804, in _call_llm_async
    async for event in agen:
      yield event
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 788, in _call_llm_with_tracing
    async for llm_response in agen:
    ...<12 lines>...
      yield llm_response
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 998, in _run_and_handle_error
    raise model_error
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 982, in _run_and_handle_error
    async for response in agen:
      yield response
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 1080, in generate_content_async
    response = await self.llm_client.acompletion(**completion_args)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 125, in acompletion
    return await acompletion(
           ^^^^^^^^^^^^^^^^^^
    ...<4 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1638, in wrapper_async
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1484, in wrapper_async
    result = await original_function(*args, **kwargs)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 617, in acompletion
    raise exception_type(
          ~~~~~~~~~~~~~~^
        model=model,
        ^^^^^^^^^^^^
    ...<3 lines>...
        extra_kwargs=kwargs,
        ^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2323, in exception_type
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2299, in exception_type
    raise APIConnectionError(
    ...<8 lines>...
    )
litellm.exceptions.APIConnectionError: litellm.APIConnectionError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
Traceback (most recent call last):
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    response = await init_response
               ^^^^^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    _auth_header, vertex_project = await self._ensure_access_token_async(
                                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    return await asyncify(self.get_access_token)(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<2 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    return await anyio.to_thread.run_sync(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    ...<3 lines>...
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    return await get_async_backend().run_sync_in_worker_thread(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    return await future
           ^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    result = context.run(func, *args)
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    raise e
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    _credentials, credential_project_id = self.load_auth(
                                          ~~~~~~~~~~~~~~^
        credentials=credentials, project_id=project_id
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    creds, creds_project_id = self._credentials_from_default_auth(
                              ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
        scopes=["https://www.googleapis.com/auth/cloud-platform"]
        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    )
    ^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    return google_auth.default(scopes=scopes)
           ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
  File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.

ERROR:    Exception in ASGI application
  + Exception Group Traceback (most recent call last):
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/uvicorn/protocols/http/h11_impl.py", line 403, in run_asgi
  |     result = await app(  # type: ignore[func-returns-value]
  |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |         self.scope, self.receive, self.send
  |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |     )
  |     ^
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/uvicorn/middleware/proxy_headers.py", line 60, in __call__
  |     return await self.app(scope, receive, send)
  |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/applications.py", line 113, in __call__
  |     await self.middleware_stack(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/errors.py", line 186, in __call__
  |     raise exc
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/errors.py", line 164, in __call__
  |     await self.app(scope, receive, _send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/cors.py", line 85, in __call__
  |     await self.app(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/middleware/exceptions.py", line 63, in __call__
  |     await wrap_app_handling_exceptions(self.app, conn)(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
  |     raise exc
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 42, in wrapped_app
  |     await app(scope, receive, sender)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 716, in __call__
  |     await self.middleware_stack(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 736, in app
  |     await route.handle(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 290, in handle
  |     await self.app(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 78, in app
  |     await wrap_app_handling_exceptions(app, request)(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 53, in wrapped_app
  |     raise exc
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/_exception_handler.py", line 42, in wrapped_app
  |     await app(scope, receive, sender)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/starlette/routing.py", line 76, in app
  |     await response(scope, receive, send)
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/sse_starlette/sse.py", line 255, in __call__
  |     async with anyio.create_task_group() as task_group:
  |                ~~~~~~~~~~~~~~~~~~~~~~~^^
  |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 781, in __aexit__
  |     raise BaseExceptionGroup(
  |         "unhandled errors in a TaskGroup", self._exceptions
  |     ) from None
  | ExceptionGroup: unhandled errors in a TaskGroup (1 sub-exception)
  +-+---------------- 1 ----------------
    | Traceback (most recent call last):
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    |     response = await init_response
    |                ^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    |     _auth_header, vertex_project = await self._ensure_access_token_async(
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    |     return await asyncify(self.get_access_token)(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<2 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    |     return await anyio.to_thread.run_sync(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    |     return await get_async_backend().run_sync_in_worker_thread(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |         func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    |     return await future
    |            ^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    |     result = context.run(func, *args)
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    |     _credentials, credential_project_id = self.load_auth(
    |                                           ~~~~~~~~~~~~~~^
    |         credentials=credentials, project_id=project_id
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    |     creds, creds_project_id = self._credentials_from_default_auth(
    |                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
    |         scopes=["https://www.googleapis.com/auth/cloud-platform"]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    |     return google_auth.default(scopes=scopes)
    |            ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    |     raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
    | google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
    | 
    | During handling of the above exception, another exception occurred:
    | 
    | Traceback (most recent call last):
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 420, in _on_done
    |     completed.result()
    |     ~~~~~~~~~~~~~~~~^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    |     result = await func(*args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 438, in _cleanup_producer
    |     await producer_task
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/utils/telemetry.py", line 196, in async_wrapper
    |     result = await func(*args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/a2a/server/request_handlers/default_request_handler.py", line 196, in _run_event_stream
    |     await self.agent_executor.execute(request, queue)
    |   File "/Users/polina/_/genui/examples/verdure/server/a2ui_extension/src/a2ui_ext/__init__.py", line 79, in execute
    |     await self._delegate.execute(context, event_queue, use_ui=use_ui)
    |   File "/Users/polina/_/genui/examples/verdure/server/verdure/agent_executor.py", line 223, in execute
    |     async for item in agent.stream(query, task.context_id, image_part=image_part):
    |     ...<79 lines>...
    |         break
    |   File "/Users/polina/_/genui/examples/verdure/server/verdure/agent.py", line 199, in stream
    |     async for event in self._runner.run_async(
    |     ...<21 lines>...
    |             }
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 443, in run_async
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 427, in _run_with_trace
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 653, in _exec_with_plugin
    |     async for event in agen:
    |     ...<9 lines>...
    |       yield (modified_event if modified_event else event)
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/runners.py", line 416, in execute
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/base_agent.py", line 294, in run_async
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/agents/llm_agent.py", line 435, in _run_async_impl
    |     async for event in agen:
    |     ...<5 lines>...
    |         should_pause = True
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 356, in run_async
    |     async for event in agen:
    |       last_event = event
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 433, in _run_one_step_async
    |     async for llm_response in agen:
    |     ...<13 lines>...
    |           yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 804, in _call_llm_async
    |     async for event in agen:
    |       yield event
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 788, in _call_llm_with_tracing
    |     async for llm_response in agen:
    |     ...<12 lines>...
    |       yield llm_response
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 998, in _run_and_handle_error
    |     raise model_error
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/flows/llm_flows/base_llm_flow.py", line 982, in _run_and_handle_error
    |     async for response in agen:
    |       yield response
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 1080, in generate_content_async
    |     response = await self.llm_client.acompletion(**completion_args)
    |                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/adk/models/lite_llm.py", line 125, in acompletion
    |     return await acompletion(
    |            ^^^^^^^^^^^^^^^^^^
    |     ...<4 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1638, in wrapper_async
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/utils.py", line 1484, in wrapper_async
    |     result = await original_function(*args, **kwargs)
    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 617, in acompletion
    |     raise exception_type(
    |           ~~~~~~~~~~~~~~^
    |         model=model,
    |         ^^^^^^^^^^^^
    |     ...<3 lines>...
    |         extra_kwargs=kwargs,
    |         ^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2323, in exception_type
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/exception_mapping_utils.py", line 2299, in exception_type
    |     raise APIConnectionError(
    |     ...<8 lines>...
    |     )
    | litellm.exceptions.APIConnectionError: litellm.APIConnectionError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
    | Traceback (most recent call last):
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/main.py", line 598, in acompletion
    |     response = await init_response
    |                ^^^^^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/gemini/vertex_and_google_ai_studio_gemini.py", line 1978, in async_completion
    |     _auth_header, vertex_project = await self._ensure_access_token_async(
    |                                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 586, in _ensure_access_token_async
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 581, in _ensure_access_token_async
    |     return await asyncify(self.get_access_token)(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<2 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/litellm_core_utils/asyncify.py", line 57, in wrapper
    |     return await anyio.to_thread.run_sync(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     ...<3 lines>...
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/to_thread.py", line 56, in run_sync
    |     return await get_async_backend().run_sync_in_worker_thread(
    |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |         func, args, abandon_on_cancel=abandon_on_cancel, limiter=limiter
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 2485, in run_sync_in_worker_thread
    |     return await future
    |            ^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/anyio/_backends/_asyncio.py", line 976, in run
    |     result = context.run(func, *args)
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 497, in get_access_token
    |     raise e
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 490, in get_access_token
    |     _credentials, credential_project_id = self.load_auth(
    |                                           ~~~~~~~~~~~~~~^
    |         credentials=credentials, project_id=project_id
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 114, in load_auth
    |     creds, creds_project_id = self._credentials_from_default_auth(
    |                               ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
    |         scopes=["https://www.googleapis.com/auth/cloud-platform"]
    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |     )
    |     ^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/litellm/llms/vertex_ai/vertex_llm_base.py", line 161, in _credentials_from_default_auth
    |     return google_auth.default(scopes=scopes)
    |            ~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
    |   File "/Users/polina/_/genui/examples/verdure/server/.venv/lib/python3.14/site-packages/google/auth/_default.py", line 752, in default
    |     raise exceptions.DefaultCredentialsError(_CLOUD_SDK_MISSING_CREDENTIALS)
    | google.auth.exceptions.DefaultCredentialsError: Your default credentials were not found. To set up Application Default Credentials, see https://cloud.google.com/docs/authentication/external/set-up-adc for more information.
    | 
    +------------------------------------