AUTOMATIC1111/stable-diffusion-webui · error · ValueError

Unable to find model info: {path}

Error message

Unable to find model info: {path}

What it means

The RealESRGAN loader iterates its registered scalers looking for one whose scaler.data_path equals the requested path; if no registered UpscalerData matches, ValueError 'Unable to find model info' is raised. It means the requested RealESRGAN model name/path is not among the built-in entries (General 4xV3, General WDN 4xV3, x4plus, x4plus-anime-6B, x2plus, etc.).

Source

Thrown at modules/realesrgan_model.py:64

            model_descriptor,
            img,
            tile_size=opts.ESRGAN_tile,
            tile_overlap=opts.ESRGAN_tile_overlap,
            # TODO: `outscale`?
        )

    def load_model(self, path):
        for scaler in self.scalers:
            if scaler.data_path == path:
                if scaler.local_data_path.startswith("http"):
                    scaler.local_data_path = modelloader.load_file_from_url(
                        scaler.data_path,
                        model_dir=self.model_download_path,
                    )
                if not os.path.exists(scaler.local_data_path):
                    raise FileNotFoundError(f"RealESRGAN data missing: {scaler.local_data_path}")
                return scaler
        raise ValueError(f"Unable to find model info: {path}")


def get_realesrgan_models(scaler: UpscalerRealESRGAN):
    return [
        UpscalerData(
            name="R-ESRGAN General 4xV3",
            path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesr-general-x4v3.pth",
            scale=4,
            upscaler=scaler,
        ),
        UpscalerData(
            name="R-ESRGAN General WDN 4xV3",
            path="https://github.com/xinntao/Real-ESRGAN/releases/download/v0.2.5.0/realesr-general-wdn-x4v3.pth",
            scale=4,
            upscaler=scaler,
        ),
        UpscalerData(
            name="R-ESRGAN AnimeVideo",

View on GitHub (pinned to 82a973c043)

Solutions

1. Use one of the registered RealESRGAN model names/paths (check get_realesrgan_models: 'R-ESRGAN General 4xV3', 'R-ESRGAN General WDN 4xV3', 'R-ESRGAN 4x+', 'R-ESRGAN 4x+ Anime6B', 'R-ESRGAN 2x+').
2. For arbitrary local upscaler weights, use the ESRGAN/general upscaler path or add an UpscalerData entry rather than RealESRGAN.
3. Pick the model via the UI dropdown so the exact registered value is used.

Example fix

# before
upscale_with_model(realesrgan, path='models/RealESRGAN/my_custom.pth')  # ValueError

# after
upscale_with_model(realesrgan, path='https://github.com/xinntao/Real-ESRGAN/releases/download/v0.1.0/RealESRGAN_x4plus.pth')  # registered data_path

def known_realesrgan_path(scalers, path):
    return any(s.data_path == path for s in scalers)

if not known_realesrgan_path(upscaler.scalers, requested_path):
    raise ValueError(f'{requested_path!r} is not a registered RealESRGAN model; '
                     f'valid: {[s.data_path for s in upscaler.scalers]}')

def is_registered_realesrgan(scalers, path: str) -> bool:
    return any(s.data_path == path for s in scalers)

try:
    scaler = upscaler.load_model(path)
except ValueError as e:
    if 'Unable to find model info' in str(e):
        # fall back to a registered default entry
        scaler = upscaler.load_model(upscaler.scalers[0].data_path)
    else:
        raise

When it happens

Trigger: Calling the RealESRGAN upscaler with a custom path/name string that differs from every registered scaler.data_path — e.g. a local file path passed where a registered URL/path is expected.

Common situations: Scripts or extensions passing an arbitrary .pth path to the RealESRGAN upscaler instead of using its registered names; renaming/moving model files so data_path no longer matches the request.

Related errors

• could not find upscaler named {self.hr_upscaler}
• RealESRGAN data missing: {scaler.local_data_path}
• Sampler not found
• Invalid encoded image
• always on script {alwayson_script_name} not found

AI-assisted analysis of AUTOMATIC1111/stable-diffusion-webui@82a973c043 (2026-08-14). Data as JSON: /api/errors/7fee2faf21da0413. Report an issue: GitHub.