Wan2GP: ImportError: DLL load failed while importing flash_attn_2_cuda: The specified module could not…

App: Wan2GP (wan.git)
Repo: https://github.com/pinokiofactory/wan.git
Generated: 2026-09-07T23:39:07.643Z
Pinokio: 8.2.0
Platform: win32 x64
Node: v22.21.1

Summary

System

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  "diagnostics": {
    "platform": "win32",
    "arch": "x64",
    "running": {},
    "home": "C:\\pinokio",
    "vars": {
      "pip": {
        "install": {
          "torch": "pip3 install torch torchvision torchaudio --index-url https://download.pytorch.org/whl/cu118"
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    "memory": {
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      "rpc": {
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            "env": {
              "SERVER_NAME": "127.0.0.1",
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            "path": "app",
            "message": [
              "python wgp.py --multiple-images --advanced {{args.compile ? '--compile' : ''}}"
            ],
            "on": [
              {
                "event": "/http://[0-9.:]+/",
                "done": true
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      "input": {
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      "brand": "Gen Intel® Core™ i7-11700",
      "vendor": "GenuineIntel",
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      "speed": 2.5,
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}

Logs

logs/api/start.js/1788824139143

Source: api / start.js
Lines: 74 total, last 74 included

[api shell.run]
Microsoft Windows [Version 10.0.19045.7663]
(c) Microsoft Corporation. All rights reserved.

C:\pinokio\api\wan.git\app>conda_hook & conda deactivate & conda deactivate & conda deactivate & conda activate b
ase & C:\pinokio\api\wan.git\app\venv\Scripts\activate C:\pinokio\api\wan.git\app\venv && python wgp.py --multipl
e-images --advanced
Traceback (most recent call last):
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\utils\import_utils.py", line 1016, in _get_mo
dule
    return importlib.import_module("." + module_name, self.__name__)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\Users\mcgli\AppData\Roaming\uv\python\cpython-3.11-windows-x86_64-none\Lib\importlib\__init__.py", lin
e 126, in import_module
    return _bootstrap._gcd_import(name[level:], package, level)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1126, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1204, in _gcd_import
  File "<frozen importlib._bootstrap>", line 1176, in _find_and_load
  File "<frozen importlib._bootstrap>", line 1147, in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 690, in _load_unlocked
  File "<frozen importlib._bootstrap_external>", line 940, in exec_module
  File "<frozen importlib._bootstrap>", line 241, in _call_with_frames_removed
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\models\transformers\__init__.py", line 20, in
 <module>
    from .transformer_bria import BriaTransformer2DModel
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\models\transformers\transformer_bria.py", lin
e 14, in <module>
    from ..attention_dispatch import dispatch_attention_fn
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\models\attention_dispatch.py", line 70, in <m
odule>
    from flash_attn import flash_attn_func, flash_attn_varlen_func
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\flash_attn\__init__.py", line 3, in <module>
    from flash_attn.flash_attn_interface import (
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\flash_attn\flash_attn_interface.py", line 15, in <modul
e>
    import flash_attn_2_cuda as flash_attn_gpu
ImportError: DLL load failed while importing flash_attn_2_cuda: The specified module could not be found.

The above exception was the direct cause of the following exception:

Traceback (most recent call last):
  File "C:\pinokio\api\wan.git\app\wgp.py", line 38, in <module>
    from mmgp import offload, safetensors2, profile_type , quant_router
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\mmgp\offload.py", line 75, in <module>        
    from .quant_router import (
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\mmgp\quant_router.py", line 7, in <module>
    from optimum.quanto import QModuleMixin, register_qmodule
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\optimum\quanto\__init__.py", line 19, in <module>      
    from .models import *
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\optimum\quanto\models\__init__.py", line 34, in <module
>
    from .diffusers_models import *
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\optimum\quanto\models\diffusers_models.py", line 30, in
 <module>
    from diffusers import PixArtTransformer2DModel
  File "<frozen importlib._bootstrap>", line 1229, in _handle_fromlist
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\utils\import_utils.py", line 1007, in __getat
tr__
    value = getattr(module, name)
            ^^^^^^^^^^^^^^^^^^^^^
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\utils\import_utils.py", line 1006, in __getat
tr__
    module = self._get_module(self._class_to_module[name])
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "C:\pinokio\api\wan.git\app\venv\Lib\site-packages\diffusers\utils\import_utils.py", line 1018, in _get_mo
dule
    raise RuntimeError(
RuntimeError: Failed to import diffusers.models.transformers.pixart_transformer_2d because of the following error
 (look up to see its traceback):
DLL load failed while importing flash_attn_2_cuda: The specified module could not be found.