exo-explore/exo · error · FileNotFoundError

config.json not found in {self._model_path}

Error message

config.json not found in {self._model_path}

What it means

Error "config.json not found in {self._model_path}" thrown in exo-explore/exo.

Source

Thrown at src/exo/worker/engines/mlx/vision.py:282

            return None
        for attr in dir(pkg):  # pyright: ignore[reportAny]
            cls = getattr(pkg, attr)  # pyright: ignore[reportAny]
            if isinstance(cls, type) and attr.endswith("ImageProcessor"):
                return cls.from_pretrained(repo)  # type: ignore
        return None

    def ensure_loaded(self) -> None:
        if self._loaded:
            return
        self._load_weights()
        self._loaded = True

    def _load_weights(self) -> None:
        _patch_video_processor()
        logger.info(f"Loading vision weights from {self._model_path}")
        config = self._load_config_json()
        if not config:
            raise FileNotFoundError(f"config.json not found in {self._model_path}")

        vision_cfg = config.get("vision_config", {})  # type: ignore

        config_mod, vision_mod = self._import_mlx_vlm("config", "vision")  # type: ignore
        vision_config_cls = config_mod.VisionConfig  # type: ignore
        vision_model_cls = vision_mod.VisionModel  # type: ignore

        vision_config = vision_config_cls(  # type: ignore
            **_filter_config(vision_config_cls, vision_cfg)  # type: ignore
        )
        self._spatial_merge_size = getattr(vision_config, "spatial_merge_size", 2)  # type: ignore
        self._vision_tower = vision_model_cls(vision_config)
        model_mod: Any = None
        with contextlib.suppress(ImportError):
            model_mod = self._import_mlx_vlm(self._config.model_type)  # type: ignore

        projector_cls = None
        if model_mod is not None:

View on GitHub (pinned to 21a54c5ea0)

When it happens

Trigger: Thrown at src/exo/worker/engines/mlx/vision.py:282 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of exo-explore/exo@21a54c5ea0 (2026-08-26). Data as JSON: /api/errors/e251f35f13f9a4ff. Report an issue: GitHub.