{"record":{"id":"4d78e29ba8296225","repo":"Significant-Gravitas/AutoGPT","slug":"internal-server-error-in-otto-proxy","errorCode":null,"errorMessage":"Internal server error in Otto proxy","messagePattern":"Internal server error in Otto proxy","errorType":"http","errorClass":"HTTPException","httpStatus":500,"severity":"error","filePath":"autogpt_platform/backend/backend/api/features/otto/service.py","lineNumber":138,"sourceCode":"                    data = await response.json()\n                    logger.info(\n                        f\"Successfully received response from Otto API for user {user_id}\"\n                    )\n                    return ApiResponse(**data)\n\n        except aiohttp.ClientError as e:\n            logger.error(f\"Connection error to Otto API: {str(e)}\")\n            raise HTTPException(\n                status_code=503, detail=\"Failed to connect to Otto service\"\n            )\n        except asyncio.TimeoutError:\n            logger.error(\"Timeout error connecting to Otto API after 60 seconds\")\n            raise HTTPException(\n                status_code=504, detail=\"Request to Otto service timed out\"\n            )\n        except Exception as e:\n            logger.error(f\"Unexpected error in Otto API proxy: {str(e)}\")\n            raise HTTPException(\n                status_code=500, detail=\"Internal server error in Otto proxy\"\n            )\n","sourceCodeStart":120,"sourceCodeEnd":141,"githubUrl":"https://github.com/Significant-Gravitas/AutoGPT/blob/9c8bb5550f446ba5d3046b78896578742495b3cf/autogpt_platform/backend/backend/api/features/otto/service.py#L120-L141","documentation":"Catch-all 500 from OttoService.ask for any exception not covered by the ClientError/TimeoutError handlers — e.g. JSON decode failures of the upstream body, validation errors building ApiResponse, or bugs in payload construction. It masks the root cause from the client (the real exception is only in logs).","triggerScenarios":"Otto returns 200 but with a body that isn't valid JSON or doesn't match the ApiResponse schema (response.json() or ApiResponse(**data) raising); errors while fetching/serializing graph data that escape their own try/except; unexpected runtime errors in the request path.","commonSituations":"Otto API contract change breaking ApiResponse parsing; partial/truncated responses; upstream returning HTML error pages with status 200 behind a misconfigured gateway.","solutions":["Read the backend log line 'Unexpected error in Otto proxy' — it contains the actual exception and traceback.","If it's a parse/validation error, capture the raw upstream body (add temporary debug logging) and diff it against the ApiResponse schema.","Align backend and Otto API versions so the response contract matches.","Fix the specific root cause; the 500 itself is only a wrapper."],"exampleFix":"# before\nexcept Exception as e:\n    logger.error(f\"Unexpected error in Otto API proxy: {str(e)}\")\n    raise HTTPException(status_code=500, detail=\"Internal server error in Otto proxy\")\n# after — narrow the parse failure so it's diagnosable\nexcept json.JSONDecodeError as e:\n    logger.error(f\"Otto returned non-JSON body: {e}\")\n    raise HTTPException(status_code=502, detail=\"Otto returned an invalid response\")","handlingStrategy":"try-catch","validationCode":"// Server-side: validate the upstream body shape before constructing ApiResponse\nconst raw = await response.text();\nconst parsed = JSON.parse(raw); // surfaces decode errors distinctly\nif (!('answer' in parsed)) throw new TypeError('unexpected Otto response shape');","typeGuard":"function isApiResponse(o: unknown): o is ApiResponse {\n  return !!o && typeof (o as ApiResponse).answer === 'string';\n}","tryCatchPattern":"try { return ApiResponse(**data); }\ncatch (e) {\n  logger.error('Otto response contract violated: %s', raw_body);\n  raise HTTPException(502, 'Otto returned an invalid response');\n}","preventionTips":["Contract-test the Otto response schema in CI for both releases.","Log the raw upstream body (truncated) on parse failures.","Keep backend and Otto API versions deployed in lockstep."],"tags":["http-500","catch-all","otto","parsing"],"backgroundTag":null,"analyzedSha":"9c8bb5550f446ba5d3046b78896578742495b3cf","analyzedAt":"2026-08-14T17:17:21.957Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}