CivArchive
    WAN22Lightning - 0.3
    NSFW

    Version 0.2

    Swapped out the Upscale KSampler for one that doesn't largely ignore the first pass.

    Version 0.1

    Lightning

    https://huggingface.co/lightx2v/Wan2.2-Lightning/tree/main/Wan2.2-T2V-A14B-4steps-lora-250928

    Description

    FAQ

    Comments (2)

    phanivuni09Aug 21, 2026
    CivitAI

    Hi,
    I am trying to get this working on my local. I am getting below error. Please help.

    [INFO] got prompt

    [ERROR] Failed to validate prompt for output 318:

    [ERROR] * (prompt):

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] * VHS_VideoCombine 318:

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] Output will be ignored

    [ERROR] Failed to validate prompt for output 321:

    [ERROR] * (prompt):

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] * LayerUtility: PurgeVRAM V2 321:

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] Output will be ignored

    [ERROR] Failed to validate prompt for output 319:

    [ERROR] * (prompt):

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] * VHS_VideoCombine 319:

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] Output will be ignored

    [ERROR] Failed to validate prompt for output 317:

    [ERROR] * (prompt):

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] * VHS_VideoCombine 317:

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] Output will be ignored

    [ERROR] Failed to validate prompt for output 322:

    [ERROR] * (prompt):

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] * LayerUtility: PurgeVRAM V2 322:

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] Output will be ignored

    [ERROR] Failed to validate prompt for output 320:

    [ERROR] * (prompt):

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] * LayerUtility: PurgeVRAM V2 320:

    [ERROR] - Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given

    [ERROR] Output will be ignored

    [WARNING] invalid prompt: {'type': 'prompt_outputs_failed_validation', 'message': 'Prompt outputs failed validation', 'details': 'Exception when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given\nException when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given\nException when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given\nException when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given\nException when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given\nException when validating node: patch_validate_inputs.<locals>.wrapper_validate_inputs() takes 3 positional arguments but 4 were given', 'extra_info': {}}

    az420
    Author
    Aug 22, 2026

    There is some evidence that older Kijai/KJNodes installations have been involved in this exact situation, so if the search points there, updating KJNodes is the likely fix.

    Ultimately though what you are likely dealing with is a ComfyUI installation with custom nodes that has gotten messy and is running new and old stuff that do not work together. It's not unlikely that this old workflow has some old stuff in it.
    If you wanted to try to find which node, IU'd start by muting/bypassing the LayerUtility: PurgeVRAM V2 or replacing it with LayerUtility: PurgeVRAM

    Workflows
    Wan Video 2.2 T2V-A14B

    Details

    Downloads
    291
    Platform
    CivitAI
    Platform Status
    Available
    Created
    2/27/2026
    Updated
    9/3/2026
    Deleted
    -

    Files

    wan22lightning_03.zip

    Mirrors

    CivitAI (1 mirrors)