{"record":{"id":"e95c42fb84990ce5","repo":"D4Vinci/Scrapling","slug":"no-session-found-with-the-request-session-id","errorCode":null,"errorMessage":"No session found with the request session id","messagePattern":"No session found with the request session id","errorType":"exception","errorClass":"RuntimeError","httpStatus":null,"severity":"error","filePath":"scrapling/spiders/session.py","lineNumber":134,"sourceCode":"                if isinstance(client, _ASyncSessionLogic):\n                    kwargs = request._session_kwargs.copy()\n                    method = cast(SUPPORTED_HTTP_METHODS, kwargs.pop(\"method\", \"GET\"))\n                    response = await client._make_request(\n                        method=method,\n                        url=request.url,\n                        **kwargs,\n                    )\n                else:\n                    # Sync session or other types - shouldn't happen in async context\n                    raise TypeError(f\"Session type {type(client)} not supported for async fetch\")\n            else:\n                response = await session.fetch(url=request.url, **request._session_kwargs)\n\n            response.request = request\n            # Merge request meta into response meta (response meta takes priority)\n            response.meta = {**request.meta, **response.meta}\n            return response\n        raise RuntimeError(\"No session found with the request session id\")\n\n    async def __aenter__(self) -> \"SessionManager\":\n        await self.start()\n        return self\n\n    async def __aexit__(self, *exc) -> None:\n        await self.close()\n\n    def __contains__(self, session_id: str) -> bool:\n        \"\"\"Check if a session ID is registered.\"\"\"\n        return session_id in self._sessions\n\n    def __len__(self) -> int:\n        \"\"\"Number of registered sessions.\"\"\"\n        return len(self._sessions)\n","sourceCodeStart":116,"sourceCodeEnd":150,"githubUrl":"https://github.com/D4Vinci/Scrapling/blob/5d213a2d4764002bfc4fed33c32fe09fa8b0bf7f/scrapling/spiders/session.py#L116-L150","documentation":"Raised by SessionManager.fetch when no session is registered under the request's session id. Request objects carry a sid; if that sid was never added via SessionManager.add(), the lookup fails and the crawl aborts for that request.","triggerScenarios":"Creating Request(url, sid=\"api\") when no manager.add(\"api\", ...) happened in configure_sessions; passing a sid that was removed via manager.remove/pop before the request was scheduled; typos or renamed session ids between configure_sessions and parse/callback code that yields requests.","commonSituations":"Sessions defined in one place (configure_sessions) but referenced by string in another (start_requests or parse callbacks); refactoring that renames session ids without updating Request constructors; conditionally-added sessions where the condition was false.","solutions":["Use a session id that was registered: check spider._session_manager.session_ids or `sid in manager` before yielding the Request","Omit sid to fall back to the default session: Request(url) uses default_session_id","Register the missing session in configure_sessions with manager.add(\"<sid>\", session)"],"exampleFix":"// before\nyield Request(url, sid=\"browser\")  # 'browser' never registered\n\n// after\ndef configure_sessions(self, manager):\n    manager.add(\"browser\", AsyncDynamicSession())\n\nyield Request(url, sid=\"browser\")","handlingStrategy":"validation","validationCode":"sid = \"api\"\nif sid not in spider._session_manager:\n    sid = spider._session_manager.default_session_id\nyield Request(url, sid=sid)","typeGuard":"def has_session(manager, sid: str) -> bool:\n    return sid in manager  # SessionManager.__contains__","tryCatchPattern":"except RuntimeError as e:\n    if \"No session found\" in str(e):\n        yield Request(url)  # retry on the default session","preventionTips":["Define session ids as constants used by both configure_sessions and Request constructors","Print manager.session_ids during development to verify registrations","Omit sid to use the default session"],"tags":["session","configuration","lookup"],"backgroundTag":null,"analyzedSha":"5d213a2d4764002bfc4fed33c32fe09fa8b0bf7f","analyzedAt":"2026-08-14T22:23:09.440Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}