JsonPlusSerializer: pydantic RootModel state loses its type on checkpoint round trip and breaks interrupt/resume
Public issue #9480 in langchain-ai/langgraph. The source issue contains the full report and discussion.
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Reported problem
The record contains the title “JsonPlusSerializer: pydantic RootModel state loses its type on checkpoint round trip and breaks interrupt/resume” but no substantive source summary.
Frequency & alternatives
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