Description: I’m encountering a persistent InvalidUpdateError when attempting to update thread state in LangGraph API v0.4.20. The error occurs during state updates and suggests that a node named __copy__ doesn’t exist in my graph definition. This is happening with langgraph dev –allow-blocking and i put some multiple inputs in studio Error Details: langgraph.errors.InvalidUpdateError: Node __copy__ does not exist Stack Trace Context: Error occurs in graph.aupdate_state() → abulk_update_st...
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