Comfy-Org/ComfyUI · error · Exception

Kling task {response.data.task_id} succeeded but no image da

Error message

Kling task {response.data.task_id} succeeded but no image data found in response.

What it means

Image-mode counterpart of the video check: raised by validate_image_result_response when a Kling image task succeeded but task_result.images is missing/empty. The task completed yet delivered no image record, which the node treats as a hard failure rather than returning blank output.

Source

Thrown at comfy_api_nodes/nodes_kling.py:315

        error_msg = f"Kling initial request failed. Code: {response.code}, Message: {response.message}, Data: {response.data}"
        logging.error(error_msg)
        raise Exception(error_msg)


def validate_video_result_response(response) -> None:
    """Validates that the Kling task result contains a video."""
    if not is_valid_video_response(response):
        error_msg = f"Kling task {response.data.task_id} succeeded but no video data found in response."
        logging.error("Error: %s.\nResponse: %s", error_msg, response)
        raise Exception(error_msg)


def validate_image_result_response(response) -> None:
    """Validates that the Kling task result contains an image."""
    if not is_valid_image_response(response):
        error_msg = f"Kling task {response.data.task_id} succeeded but no image data found in response."
        logging.error("Error: %s.\nResponse: %s", error_msg, response)
        raise Exception(error_msg)


def validate_input_image(image: torch.Tensor) -> None:
    """
    Validates the input image adheres to the expectations of the Kling API:
    - The image resolution should not be less than 300*300px
    - The aspect ratio of the image should be between 1:2.5 ~ 2.5:1

    See: https://app.klingai.com/global/dev/document-api/apiReference/model/imageToVideo
    """
    validate_image_dimensions(image, min_width=300, min_height=300)
    validate_image_aspect_ratio(image, (1, 2.5), (2.5, 1))


def get_video_from_response(response) -> KlingVideoResult:
    """Returns the first video object from the Kling video generation task result.
    Will raise an error if the response is not valid.
    """

View on GitHub (pinned to 1c6d8d45b3)

Solutions

1. Re-run the task with a fresh submission
2. Take the task_id from the message and inspect it via the Kling console
3. Soften prompt content in case moderation removed the finished image
4. Check for comfy_api_nodes updates if the empty result is consistent

for attempt in range(2):
    try:
        out = await kling_image_node(...)
        break
    except Exception as e:
        if attempt == 1 or "no image data found" not in str(e):
            raise

When it happens

Trigger: Kling image task (e.g. image-to-video first-frame generators or Kling image endpoints) finishing with an empty images array — moderation removal post-completion, storage failure, or payload schema drift.

Common situations: Generated image removed by moderation after task success; Kling result CDN issues; rare transient inconsistency on high-load days.

Related errors

• Kling task {response.data.task_id} succeeded but no video da
• Gemini API returned no response candidates. If you are using
• Gemini API blocked the request. Reasons: {blocked_reasons}
• Gemini did not generate an image. Model response: {model_mes
• Gemini did not generate an image. Try rephrasing your prompt

AI-assisted analysis of Comfy-Org/ComfyUI@1c6d8d45b3 (2026-08-14). Data as JSON: /api/errors/d05e1ed959ae0bd6. Report an issue: GitHub.