{"record":{"id":"3ad7705d18a9239e","repo":"HKUDS/DeepTutor","slug":"image-generation-request-error-exc-3ad770","errorCode":null,"errorMessage":"Image generation request error: {exc}","messagePattern":"Image generation request error: (.+?)","errorType":"http","errorClass":"GenerationProviderError","httpStatus":null,"severity":"error","filePath":"deeptutor/services/imagegen/adapters/openai_compat.py","lineNumber":65,"sourceCode":"        if config.quality:\n            payload[\"quality\"] = config.quality\n        if config.style:\n            payload[\"style\"] = config.style\n        if config.response_format:\n            payload[\"response_format\"] = config.response_format\n\n        logger.debug(\n            \"imagegen url=%s model=%s n=%d size=%s\", url, config.model, max(1, n), config.size\n        )\n        try:\n            async with httpx.AsyncClient(timeout=config.request_timeout) as client:\n                resp = await client.post(url, headers=headers, json=payload)\n                raise_for_provider(resp, \"Image generation\")\n                images = [\n                    await self._materialize(client, item) for item in self._extract_items(resp)\n                ]\n        except httpx.HTTPError as exc:\n            raise GenerationProviderError(f\"Image generation request error: {exc}\") from exc\n        if not images:\n            raise GenerationProviderError(\"Image provider returned no images.\")\n        return images\n\n    @staticmethod\n    def _extract_items(resp: httpx.Response) -> list[dict[str, Any]]:\n        data = resp.json()\n        if isinstance(data, dict):\n            items = data.get(\"data\")\n            if isinstance(items, list) and items:\n                return [item for item in items if isinstance(item, dict)]\n        raise GenerationProviderError(\"Image response had no `data` array.\")\n\n    async def _materialize(\n        self, client: httpx.AsyncClient, item: dict[str, Any]\n    ) -> tuple[bytes, str]:\n        b64 = item.get(\"b64_json\")\n        if isinstance(b64, str) and b64:","sourceCodeStart":47,"sourceCodeEnd":83,"githubUrl":"https://github.com/HKUDS/DeepTutor/blob/3e82f130422a813cdd73c10b21a44e9325f5821a/deeptutor/services/imagegen/adapters/openai_compat.py#L47-L83","documentation":"A httpx.HTTPError occurred while POSTing {base}/images/generations or while downloading an image URL from the response (_materialize's GET runs inside the same try). The adapter wraps it in GenerationProviderError with the underlying exception chained.","triggerScenarios":"Unreachable/black-holed API host, connection reset, timeout during generation, TLS failure, or the b64-less url item pointing at an unreachable file host.","commonSituations":"Firewalled or proxied egress, expired DNS, provider outage, self-signed cert on a gateway, timeout too short for image generation workloads.","solutions":["Confirm the API host is reachable (curl POST {base}/images/generations with the key)","Retry with exponential backoff for transient network errors","Configure proxy/trust env or fix TLS if that's the failure mode","Raise the httpx timeout — image generation routinely exceeds default client timeouts"],"exampleFix":null,"handlingStrategy":"retry","validationCode":null,"typeGuard":null,"tryCatchPattern":"for attempt in range(3):\n    try:\n        return await adapter.generate(prompt, config)\n    except GenerationProviderError as exc:\n        if \"request error\" not in str(exc) or attempt == 2:\n            raise\n        await asyncio.sleep(2 ** attempt)","preventionTips":["Use long timeouts for image endpoints","Retry transient network errors with backoff","Monitor provider status pages for outages"],"tags":["network","httpx","imagegen","timeout"],"backgroundTag":"http-request-failed","analyzedSha":"3e82f130422a813cdd73c10b21a44e9325f5821a","analyzedAt":"2026-08-27T06:57:25.364Z","schemaVersion":2},"datasetVersion":"2026-08-27T08:17:20.692Z"}