Issue:
- Object of type <class 'uuid.UUID'> is not JSON serializable error when creating checkpoints
- UUID objects in database records couldn't be serialized to JSON
Solution:
- Updated json_serializer function in create_checkpoint() to properly handle UUID types
- Added explicit isinstance check for uuid.UUID before checking for isoformat
- Ensures all UUID values are converted to strings before JSON serialization
This ensures checkpoints can be created successfully with all database data types.
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Co-Authored-By: Claude <noreply@anthropic.com>
Codex Agent