Comfy-Org/ComfyUI · error · Exception

An unknown error occurred: {response.code} - {response.messa

Error message

An unknown error occurred: {response.code} - {response.message}

What it means

Error "An unknown error occurred: {response.code} - {response.message}" thrown in Comfy-Org/ComfyUI.

Source

Thrown at comfy_api_nodes/nodes_qwen.py:103

            image, total_pixels=2048 * 2048, mime_type="image/jpeg"
        )
    return "data:image/png;base64," + b64


async def _download_result_images(response: QwenImageGenerationResponse) -> torch.Tensor:
    if not response.output:
        raise Exception(f"An unknown error occurred: {response.code} - {response.message}")
    urls = [
        item.image
        for choice in response.output.choices

View on GitHub (pinned to 1c6d8d45b3)

Solutions

1. Check the Qwen API error code and message and adjust the request.

When it happens

Trigger: Thrown at comfy_api_nodes/nodes_qwen.py:103 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of Comfy-Org/ComfyUI@1c6d8d45b3 (2026-08-14). Data as JSON: /api/errors/2d98749ed9dad2e7. Report an issue: GitHub.