{"record":{"id":"ebe1fc33620e85da","repo":"langgenius/dify","slug":"the-server-encountered-an-internal-error-and-was-u","errorCode":null,"errorMessage":"The server encountered an internal error and was unable to complete your request. Either the server is overloaded or there is an error in the application.","messagePattern":"The server encountered an internal error and was unable to complete your request\\. Either the server is overloaded or there is an error in the application\\.","errorType":"http","errorClass":"InternalServerError","httpStatus":500,"severity":"error","filePath":"api/controllers/console/app/message.py","lineNumber":534,"sourceCode":"            session=session,\n        )\n    except MessageNotExistsError:\n        raise NotFound(\"Message not found\")\n    except ConversationNotExistsError:\n        raise NotFound(\"Conversation not found\")\n    except ProviderTokenNotInitError as ex:\n        raise ProviderNotInitializeError(ex.description)\n    except QuotaExceededError:\n        raise ProviderQuotaExceededError()\n    except ModelCurrentlyNotSupportError:\n        raise ProviderModelCurrentlyNotSupportError()\n    except InvokeError as e:\n        raise CompletionRequestError(e.description)\n    except SuggestedQuestionsAfterAnswerDisabledError:\n        raise AppSuggestedQuestionsAfterAnswerDisabledError()\n    except Exception:\n        logger.exception(\"internal server error.\")\n        raise InternalServerError()\n\n    return dump_response(SuggestedQuestionsResponse, {\"data\": questions})\n\n\ndef _get_message_detail(*, session: Session, app_model: App, message_id: UUID):\n    message_id_str = str(message_id)\n\n    message = session.scalar(\n        select(Message).where(Message.id == message_id_str, Message.app_id == app_model.id).limit(1)\n    )\n\n    if not message:\n        raise NotFound(\"Message Not Exists.\")\n\n    attach_message_extra_contents([message])\n    return dump_response(MessageDetailResponse, MessageResponseSource(message, session=session))\n","sourceCodeStart":516,"sourceCodeEnd":551,"githubUrl":"https://github.com/langgenius/dify/blob/ef8544b173fd6cd7a8e71df2cab576e52bebbfbc/api/controllers/console/app/message.py#L516-L551","documentation":"The catch-all InternalServerError in _get_message_suggested_questions (api/controllers/console/app/message.py:532-534). Any exception not matched by the specific handlers (MessageNotExists, ConversationNotExists, provider token/quota/model, InvokeError, disabled-feature) is logged via logger.exception and re-raised as a generic 500. It means an unexpected server-side fault occurred during suggested-question generation.","triggerScenarios":"An unanticipated exception during MessageService.get_suggested_questions_after_answer — e.g. serialization bug, DB session error, None dereference in the service, or a new error type the controller does not yet translate.","commonSituations":"Database connectivity blip; ORM object missing an expected attribute after a partial migration; bug in a recently changed service; resource exhaustion (memory/CPU) causing a runtime error; corrupted message row.","solutions":["Inspect the server logs — logger.exception captures the full traceback that the generic 500 hides from the client.","Reproduce with the same message_id and capture the stack trace to identify the unhandled exception type.","If a new domain error type was introduced upstream, add a dedicated except branch to translate it instead of relying on the catch-all.","Verify DB connectivity and that the message/conversation rows are intact.","Retry once after confirming the service is healthy."],"exampleFix":null,"handlingStrategy":"try-catch","validationCode":null,"typeGuard":null,"tryCatchPattern":"try {\n  return await callSuggestedQuestions()\n} catch (e) {\n  if (e.status === 500) { notifyAdmin(e); /* surface generic error */ }\n  throw e\n}","preventionTips":["Monitor 500 rates on this endpoint and alert on spikes.","Keep the service layer typed and tested to minimize unhandled paths.","Capture request context (app_id, message_id) in logs for faster root-cause."],"tags":["internal-server-error","suggested-questions","unhandled-exception","api"],"backgroundTag":null,"analyzedSha":"ef8544b173fd6cd7a8e71df2cab576e52bebbfbc","analyzedAt":"2026-08-12T05:15:17.394Z","schemaVersion":2},"datasetVersion":"2026-08-12T13:17:24.610Z"}