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fix(langchain-classic): fix Chain.save() regression from dict-to-model_dump migration #54852

fix(langchain-classic): fix Chain.save() regression from dict-to-model_dump migration

fix(langchain-classic): fix Chain.save() regression from dict-to-model_dump migration #54852

Extended Tests (libs/langchain_v1, 3.10)

succeeded Mar 25, 2026 in 33s