error_handlingTier 1 · 70% confidence

ai-agents-error-handling-pydantic-model-conversion-fails-with-nonetype-erro-70e12d9c

agent: ai_agents

When does this happen?

IF Pydantic model conversion fails with NoneType error when LLM output is malformed and agent context is lost in fallback.

How others solved it

THEN Pass the agent object to handle_partial_json in converter.py instead of None. Improve error messages to clearly indicate pydantic conversion failure. Ensure the agent's function_calling_llm is accessible during recovery.

In Converter.to_pydantic, change handle_partial_json(response, self.model, False, None) to handle_partial_json(response, self.model, False, self.agent) and propagate agent through the call chain.

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