{"record":{"id":"e7122a45bfd1b4ee","repo":"langflow-ai/langflow","slug":"flow-version-row-flow-version-id-has-no-data-sn","errorCode":null,"errorMessage":"Flow version {row.flow_version_id} has no data (snapshot may be corrupted).","messagePattern":"Flow version (.+?) has no data \\(snapshot may be corrupted\\)\\.","errorType":"http","errorClass":"HTTPException","httpStatus":422,"severity":"error","filePath":"src/backend/base/langflow/api/v1/mappers/deployments/helpers.py","lineNumber":181,"sourceCode":"                Deployment.user_id == user_id,\n                Deployment.project_id == Flow.folder_id,\n            ),\n        )\n        .order_by(indexed_flow_version_ids_cte.c.position)\n    )\n    rows = list((await db.exec(statement)).all())\n    if len(rows) < len(flow_version_ids):\n        msg = (\n            \"One or more flow versions are invalid. \"\n            \"Please ensure the flows belong to the project containing the deployment.\"\n        )\n        raise HTTPException(status_code=status.HTTP_404_NOT_FOUND, detail=msg)\n\n    artifacts: list[tuple[UUID, int, UUID, BaseFlowArtifact]] = []\n    for row in rows:\n        if row.flow_version_data is None:\n            msg = f\"Flow version {row.flow_version_id} has no data (snapshot may be corrupted).\"\n            raise HTTPException(status_code=status.HTTP_422_UNPROCESSABLE_ENTITY, detail=msg)\n        artifacts.append(\n            (\n                row.flow_version_id,\n                row.flow_version_number,\n                row.project_id,\n                BaseFlowArtifact(\n                    id=row.flow_id,\n                    name=row.flow_name,\n                    description=row.flow_description,\n                    data=row.flow_version_data,\n                    tags=row.flow_tags,\n                ),\n            )\n        )\n    return artifacts\n\n\nasync def build_project_scoped_flow_artifacts_from_flow_versions(","sourceCodeStart":163,"sourceCodeEnd":199,"githubUrl":"https://github.com/langflow-ai/langflow/blob/976ec789d2886a86de109c044d089d68e96c9a35/src/backend/base/langflow/api/v1/mappers/deployments/helpers.py#L163-L199","documentation":"Error \"Flow version {row.flow_version_id} has no data (snapshot may be corrupted).\" thrown in langflow-ai/langflow.","triggerScenarios":"Occurs when a referenced flow version row has null data, indicating a possibly corrupted snapshot.","commonSituations":"See trigger scenarios.","solutions":["Re-create the checkpoint/version for the flow; the stored snapshot data is missing or corrupted."],"exampleFix":null,"handlingStrategy":null,"validationCode":null,"typeGuard":null,"tryCatchPattern":null,"preventionTips":[],"tags":[],"backgroundTag":null,"analyzedSha":"976ec789d2886a86de109c044d089d68e96c9a35","analyzedAt":"2026-08-14T18:23:12.227Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}