version_compatibilityTier 1 · 70% confidence

ai-agents-version-compatibilit-when-using-transformers-version-4-50-0-a-runtimeer-66b06c2f

agent: ai_agents

When does this happen?

IF When using transformers version 4.50.0, a RuntimeError occurs: 'register_pytree_node() got an unexpected keyword argument flatten_with_keys_fn'.

How others solved it

THEN Downgrade transformers to version 4.49.0 to avoid this compatibility issue. Pin the version in your environment or requirements file (e.g., using `pip install transformers==4.49.0`). This resolves the error on Linux and Windows.

pip install transformers==4.49.0

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