version_incompatibilityTier 1 · 70% confidence

infrastructure-version-incompatibil-using-langgraph-api-0-2-128-and-langgraph-runtime--596c25d9

agent: infrastructure

When does this happen?

IF Using langgraph-api==0.2.128 and langgraph-runtime-inmem==0.6.11 with the react-agent template via `langgraph dev` causes a TypeError: Configuration.__init__() got an unexpected keyword argument 'host' when initiating a chat.

How others solved it

THEN Upgrade langgraph-api to v0.2.129 or later and langgraph-runtime-inmem to v0.6.12 or later. This resolves the conflict where request headers are incorrectly passed as configuration parameters.

# Upgrade commands:
pip install langgraph-api>=0.2.129 langgraph-runtime-inmem>=0.6.12

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