{"record":{"id":"9b54418dcf4f0feb","repo":"mudler/LocalAI","slug":"first-generated-audio-path-missing-or-not-a-file","errorCode":null,"errorMessage":"first generated audio path missing or not a file","messagePattern":"first generated audio path missing or not a file","errorType":"exception","errorClass":"RuntimeError","httpStatus":null,"severity":"error","filePath":"backend/python/ace-step/backend.py","lineNumber":285,"sourceCode":"    try:\n        result = generate_music(\n            dit_handler=dit_handler,\n            llm_handler=llm_handler if (llm_handler and getattr(llm_handler, \"llm_initialized\", False)) else None,\n            params=params,\n            config=config,\n            save_dir=save_dir,\n            progress=None,\n        )\n        if not result.success:\n            raise RuntimeError(result.error or result.status_message or \"generate_music failed\")\n\n        audios = result.audios or []\n        if not audios:\n            raise RuntimeError(\"generate_music returned no audio\")\n\n        first_path = audios[0].get(\"path\") or \"\"\n        if not first_path or not os.path.isfile(first_path):\n            raise RuntimeError(\"first generated audio path missing or not a file\")\n\n        shutil.copy2(first_path, dst_path)\n    finally:\n        try:\n            shutil.rmtree(save_dir, ignore_errors=True)\n        except Exception:\n            pass\n\n\nclass BackendServicer(backend_pb2_grpc.BackendServicer):\n    def __init__(self):\n        self.model_path = None\n        self.model_dir = None\n        self.checkpoint_dir = None\n        self.project_root = None\n        self.options = {}\n        self.dit_handler = None\n        self.llm_handler = None","sourceCodeStart":267,"sourceCodeEnd":303,"githubUrl":"https://github.com/mudler/LocalAI/blob/44413a9d06bf5bc52ce088ba8ca74e5a2e8bee26/backend/python/ace-step/backend.py#L267-L303","documentation":"Raised when result.audios is non-empty but the first entry's 'path' key is missing, empty, or does not point to an existing file on disk. The backend validates the artifact path before shutil.copy2 so it fails fast instead of raising an opaque OSError from copy.","triggerScenarios":"audios[0].get('path') returns None/'' (key missing or empty string), or the path exists as a string but os.path.isfile() is False — e.g. the file was deleted, is a directory, lives on an unmounted share, or is a relative path resolved against a different cwd.","commonSituations":"Upstream returning relative paths while the backend's working directory differs, an antivirus/cleanup process removing temp files, save_dir being cleaned by a concurrent finally-block, or an audios dict schema change (key renamed from 'path' to something else).","solutions":["Log audios[0] verbatim to see whether 'path' is absent, relative, or absolute-but-missing.","If the path is relative, join it with the save_dir that was passed to generate_music before validating.","Check that nothing (finally-block, cron, container sidecar) removes save_dir before copy2 runs.","Pin/upgrade the ace-step dependency so the audios entry schema matches the expected {'path': ...} contract."],"exampleFix":"// before\nfirst_path = audios[0].get(\"path\") or \"\"\nif not first_path or not os.path.isfile(first_path):\n    raise RuntimeError(\"first generated audio path missing or not a file\")\n\n// after (tolerate relative paths from upstream)\nfirst_path = audios[0].get(\"path\") or \"\"\nif first_path and not os.path.isabs(first_path):\n    first_path = os.path.join(save_dir, first_path)\nif not first_path or not os.path.isfile(first_path):\n    raise RuntimeError(f\"first generated audio path missing or not a file: {audios[0]!r}\")","handlingStrategy":"validation","validationCode":"first_path = (result.audios or [{}])[0].get(\"path\") or \"\"\nif first_path and not os.path.isabs(first_path):\n    first_path = os.path.join(save_dir, first_path)\nassert first_path and os.path.isfile(first_path)","typeGuard":null,"tryCatchPattern":"try:\n    shutil.copy2(first_path, dst_path)\nexcept (FileNotFoundError, IsADirectoryError) as e:\n    raise RuntimeError(f\"generated audio vanished before copy: {first_path}\") from e","preventionTips":["Resolve relative artifact paths against save_dir before validation.","Do not run concurrent cleanup of the save_dir until copy completes.","Log audios[0] verbatim on failure to detect schema drift early."],"tags":["ace-step","music-generation","file-validation","path-handling"],"backgroundTag":null,"analyzedSha":"44413a9d06bf5bc52ce088ba8ca74e5a2e8bee26","analyzedAt":"2026-08-15T10:13:50.291Z","schemaVersion":2},"datasetVersion":"2026-08-15T17:31:12.345Z"}