{"record":{"id":"60dd452f9dbb8e8c","repo":"langchain-ai/langgraph","slug":"invalid-namespace-label-label-found-in-namesp","errorCode":null,"errorMessage":"Invalid namespace label '{label}' found in {namespace}. Namespace labels must be strings, but got {type(label).__name__}.","messagePattern":"Invalid namespace label '(.+?)' found in (.+?)\\. Namespace labels must be strings, but got (.+?)\\.","errorType":"validation","errorClass":"InvalidNamespaceError","httpStatus":null,"severity":"error","filePath":"libs/checkpoint/langgraph/checkpoint/store/base/__init__.py","lineNumber":1268,"sourceCode":null,"sourceCodeStart":null,"sourceCodeEnd":null,"githubUrl":"https://github.com/langchain-ai/langgraph/blob/38031739e551638e373fb553453256c23feeb41f/libs/checkpoint/langgraph/checkpoint/store/base/__init__.py#L1268","documentation":"Error \"Invalid namespace label '{label}' found in {namespace}. Namespace labels must be strings, but got {type(label).__name__}.\" thrown in langchain-ai/langgraph.","triggerScenarios":"Thrown at libs/checkpoint/langgraph/checkpoint/store/base/__init__.py:1268 when the library encounters an invalid state.","commonSituations":"See trigger scenarios.","solutions":[],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"38031739e551638e373fb553453256c23feeb41f","analyzedAt":"2026-08-26T18:02:49.312Z","schemaVersion":2},"datasetVersion":"2026-08-26T21:11:00.512Z"}