2noise/ChatTTS · error · ValueError

Unknown load format: {self.load_format}. Must be one of 'aut

Error message

Unknown load format: {self.load_format}. Must be one of 'auto', 'pt', 'safetensors', 'npcache', or 'dummy'.

What it means

Error "Unknown load format: {self.load_format}. Must be one of 'auto', 'pt', 'safetensors', 'npcache', or 'dummy'." thrown in 2noise/ChatTTS.

Source

Thrown at ChatTTS/model/velocity/configs.py:125

            )
            self.model = model_path
            self.download_dir = model_path
            self.tokenizer = model_path

        self.hf_config = get_config(self.model, trust_remote_code, revision)
        self.dtype = _get_and_verify_dtype(self.hf_config, dtype)
        self.max_model_len = _get_and_verify_max_len(self.hf_config, max_model_len)
        self._verify_load_format()
        self._verify_tokenizer_mode()
        self._verify_quantization()
        self._verify_cuda_graph()

    def _verify_load_format(self) -> None:
        load_format = self.load_format.lower()
        supported_load_format = ["auto", "pt", "safetensors", "npcache", "dummy"]
        rocm_not_supported_load_format = []
        if load_format not in supported_load_format:
            raise ValueError(
                f"Unknown load format: {self.load_format}. Must be one of "
                "'auto', 'pt', 'safetensors', 'npcache', or 'dummy'."
            )
        if is_hip() and load_format in rocm_not_supported_load_format:
            rocm_supported_load_format = [
                f
                for f in supported_load_format
                if (f not in rocm_not_supported_load_format)
            ]
            raise ValueError(
                f"load format '{load_format}' is not supported in ROCm. "
                f"Supported load format are "
                f"{rocm_supported_load_format}"
            )

        # TODO: Remove this check once HF updates the pt weights of Mixtral.
        architectures = getattr(self.hf_config, "architectures", [])
        if "MixtralForCausalLM" in architectures and load_format == "pt":

View on GitHub (pinned to 77b89ee281)

When it happens

Trigger: Thrown at ChatTTS/model/velocity/configs.py:125 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of 2noise/ChatTTS@77b89ee281 (2026-08-26). Data as JSON: /api/errors/027f09513c8f9c97. Report an issue: GitHub.