Comfy-Org/ComfyUI · error · Exception

An unknown error occurred: {initial_response.code} - {initia

Error message

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

What it means

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

Source

Thrown at comfy_api_nodes/nodes_wan.py:172

                    seed=seed,
                    prompt_extend=prompt_extend,
                    watermark=watermark,
                ),
            ),
        )
        if not initial_response.output:
            raise Exception(f"An unknown error occurred: {initial_response.code} - {initial_response.message}")
        response = await poll_op(
            cls,
            ApiEndpoint(path=f"/proxy/wan/api/v1/tasks/{initial_response.output.task_id}"),

View on GitHub (pinned to 1c6d8d45b3)

Solutions

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

When it happens

Trigger: Thrown at comfy_api_nodes/nodes_wan.py:172 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/d57e8e3bc0cb607f. Report an issue: GitHub.