{"record":{"id":"11bea777c1a7ee0b","repo":"xtekky/gpt4free","slug":"failed-to-load-pa-provider-from-file-path-n-res","errorCode":null,"errorMessage":"Failed to load PA provider from {file_path}:\\n{result.error}","messagePattern":"Failed to load PA provider from (.+?):\\\\n(.+?)","errorType":"exception","errorClass":"RuntimeError","httpStatus":null,"severity":"error","filePath":"g4f/mcp/pa_provider.py","lineNumber":754,"sourceCode":"    Returns:\n        The provider class, or ``None`` if none could be found.\n\n    Raises:\n        FileNotFoundError: If *file_path* does not exist.\n        ValueError: If *file_path* does not end with ``.pa.py``.\n        RuntimeError: If the file fails to execute.\n    \"\"\"\n    file_path = Path(file_path)\n    if not file_path.exists():\n        raise FileNotFoundError(f\"PA provider file not found: {file_path}\")\n    if not file_path.name.endswith(\".pa.py\"):\n        raise ValueError(f\"File must have .pa.py extension: {file_path}\")\n\n    code = file_path.read_text(encoding=\"utf-8\")\n    result = execute_safe_code(code, file_path=file_path, timeout=0.1, max_depth=100)\n\n    if not result.success:\n        raise RuntimeError(\n            f\"Failed to load PA provider from {file_path}:\\n{result.error}\"\n        )\n\n    # Prefer an explicit 'Provider' name\n    provider_class = result.locals.get(\"Provider\")\n    if provider_class is not None:\n        return provider_class\n\n    # Fall back to any class that looks like a provider\n    for obj in result.locals.values():\n        if isinstance(obj, type) and (\n            hasattr(obj, \"create_completion\") or hasattr(obj, \"create_async_generator\")\n        ):\n            return obj\n\n    return None\n\n","sourceCodeStart":736,"sourceCodeEnd":772,"githubUrl":"https://github.com/xtekky/gpt4free/blob/973504e1770928ed5fb82f43da528f441ad9ddc3/g4f/mcp/pa_provider.py#L736-L772","documentation":"Raised by load_pa_provider when execute_safe_code reports failure — the .pa.py file raised an exception, violated a sandbox rule (any of the ImportError/PermissionError cases above), or exceeded the load-time budget. Note the sandbox is invoked with timeout=0.1 seconds, so even a provider whose module-level code merely does slow work can fail here. result.error carries the underlying traceback, which is appended to the message.","triggerScenarios":"Any unhandled exception at module scope of the .pa.py file; a disallowed import or out-of-workspace open(); module-level work (network calls, big loops, sleeps) that exceeds the 0.1 s load timeout; syntax errors in the file.","commonSituations":"Doing request/session setup at import time instead of inside create_async_generator; a missing dependency that the sandbox rejects; syntax valid in a newer Python than the host runs.","solutions":["Read the appended result.error text — it names the real line and exception","Move all network/IO work out of module scope into the provider's create_* methods so load stays under 0.1 s","Fix the underlying sandbox violation (import/open restrictions) indicated by the inner error","Check the file compiles: python -m py_compile your.pa.py"],"exampleFix":"# before (module scope — slow, fails 0.1s load budget)\nSESSION = build_session(); SESSION.login()\n\nclass Provider(AsyncGeneratorProvider):\n    ...\n\n# after\nSESSION = None\ndef _lazy_login():\n    global SESSION\n    if SESSION is None:\n        SESSION = build_session(); SESSION.login()\n\nclass Provider(AsyncGeneratorProvider):\n    async def create_async_generator(...):\n        _lazy_login()","handlingStrategy":"try-catch","validationCode":"# keep load fast and side-effect free: check for module-level IO before shipping\nimport ast\nfor node in ast.walk(ast.parse(code)):\n    if isinstance(node, (ast.AsyncFunctionDef, ast.FunctionDef, ast.ClassDef)):\n        continue\n    # flag top-level calls that can be slow (open, requests, sleep, loops)\n    if isinstance(node, ast.Call):\n        func = getattr(node.func, 'id', getattr(node.func, 'attr', ''))\n        assert func not in {'open', 'sleep', 'input'}, f\"slow/blocked top-level call: {func}\"","typeGuard":null,"tryCatchPattern":"try:\n    provider_cls = load_pa_provider(path)\nexcept RuntimeError as e:\n    # e.args[0] contains the sandbox's inner traceback — fix that first\n    log.error(\"PA provider load failed: %s\", e)","preventionTips":["Keep .pa.py module scope to imports and class definitions only; do all IO inside create_* methods","Compile-check files (py_compile) before registering them","Read the appended result.error — it points at the exact inner failure"],"tags":["pa-provider","sandbox","runtime","timeout","loading"],"backgroundTag":null,"analyzedSha":"973504e1770928ed5fb82f43da528f441ad9ddc3","analyzedAt":"2026-08-14T23:45:32.408Z","schemaVersion":2},"datasetVersion":"2026-08-15T22:17:37.221Z"}