A0 running with Local AI can't concatenate "NoneType"

[snavazio]

Seems like the lack of an API or something else is making my A0 install get an error. This was the fix I found.
For completeness sake this is the full error....
"
Failed to filter relevant memories minimize expand_all Traceback (most recent call last): Traceback (most recent call last): File "/a0/python/extensions/message_loop_prompts_after/_50_recall_memories.py", line 146, in search_memories filter = await self.agent.call_utility_model( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/a0/agent.py", line 719, in call_utility_model response, _reasoning = await call_data["model"].unified_call( ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ File "/a0/models.py", line 545, in unified_call output = result.add_chunk(parsed) ^^^^^^^^^^^^^^^^^^^^^^^^ File "/a0/models.py", line 118, in add_chunk self.reasoning += processed_chunk["reasoning_delta"] TypeError: can only concatenate str (not "NoneType") to str TypeError: can only concatenate str (not "NoneType") to str"
"

BEFORE

self.reasoning += processed_chunk["reasoning_delta"]

AFTER (safe)

delta = processed_chunk.get("reasoning_delta")
if delta: # covers None, "", missing
self.reasoning += delta