Thanks to fix this issue, visible here:
https://github.com/OpenSmock/Pyramid/actions/runs/16076973826/job/45374355026?pr=225#annotation:4:128
from PR #225
MetacelloConflictingProjectError: Load Conflict between existing BaselineOfBloc [baseline] from github://OpenSmock/Bloc:dev/src and BaselineOfBloc [baseline] from github://pharo-graphics/Bloc:master/src
How to fix it? You need probably to change the baseline of ToploSerialization.