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[GH-ISSUE #33] ModuleNotFoundError: No module named 'nvvfx' #26

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opened 2026-10-26 22:28:08 +00:00 by bsakaguchi · 5 comments
bsakaguchi commented 2026-10-26 22:28:08 +00:00
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Originally created by @aibotpoland-eng on GitHub (Jun 19, 2026).
Original GitHub issue: https://github.com/Comfy-Org/ComfyUI_Nvidia_VFX_Nodes/issues/33

Has anyone encountered this problem ?

Traceback (most recent call last):
File "D:\ComfyUI-Easy-Install\ComfyUI-Easy-Install\ComfyUI\nodes.py", line 2212, in load_custom_node
module_spec.loader.exec_module(module)
File "", line 999, in exec_module
File "", line 488, in callwith_frames_removed
File "D:\ComfyUI-Easy-Install\ComfyUI-Easy-Install\ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes_init_.py", line 2, in
import nvvfx
ModuleNotFoundError: No module named 'nvvfx

Originally created by @aibotpoland-eng on GitHub (Jun 19, 2026). Original GitHub issue: https://github.com/Comfy-Org/ComfyUI_Nvidia_VFX_Nodes/issues/33 Has anyone encountered this problem ? Traceback (most recent call last): File "D:\ComfyUI-Easy-Install\ComfyUI-Easy-Install\ComfyUI\nodes.py", line 2212, in load_custom_node module_spec.loader.exec_module(module) File "<frozen importlib._bootstrap_external>", line 999, in exec_module File "<frozen importlib._bootstrap>", line 488, in callwith_frames_removed File "D:\ComfyUI-Easy-Install\ComfyUI-Easy-Install\ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes\__init__.py", line 2, in <module> import nvvfx ModuleNotFoundError: No module named 'nvvfx
bsakaguchi commented 2026-10-26 22:28:09 +00:00
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@Cloudlift2d commented on GitHub (Jul 4, 2026):

I also have this problem
[WARNING] Traceback (most recent call last):
File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\nodes.py", line 2212, in load_custom_node
module_spec.loader.exec_module(module)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
File "", line 1027, in exec_module
File "", line 488, in call_with_frames_removed
File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes_init.py", line 2, in
import nvvfx
ModuleNotFoundError: No module named 'nvvfx'

[WARNING] Cannot import G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes module for custom nodes: No module named 'nvvfx'
[WARNING] Traceback (most recent call last):
File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\nodes.py", line 2212, in load_custom_node
module_spec.loader.exec_module(module)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^
File "", line 1027, in exec_module
File "", line 488, in call_with_frames_removed
File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_tensorrt_init.py", line 1, in
from .tensorrt_convert import DYNAMIC_TRT_MODEL_CONVERSION
File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_tensorrt\tensorrt_convert.py", line 7, in
import tensorrt as trt
ModuleNotFoundError: No module named 'tensorrt'

<!-- gh-comment-id:4881074477 --> @Cloudlift2d commented on GitHub (Jul 4, 2026): I also have this problem [WARNING] Traceback (most recent call last): File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\nodes.py", line 2212, in load_custom_node module_spec.loader.exec_module(module) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^ File "<frozen importlib._bootstrap_external>", line 1027, in exec_module File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes\__init__.py", line 2, in <module> import nvvfx ModuleNotFoundError: No module named 'nvvfx' [WARNING] Cannot import G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes module for custom nodes: No module named 'nvvfx' [WARNING] Traceback (most recent call last): File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\nodes.py", line 2212, in load_custom_node module_spec.loader.exec_module(module) ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^ File "<frozen importlib._bootstrap_external>", line 1027, in exec_module File "<frozen importlib._bootstrap>", line 488, in _call_with_frames_removed File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_tensorrt\__init__.py", line 1, in <module> from .tensorrt_convert import DYNAMIC_TRT_MODEL_CONVERSION File "G:\Software\Folder\ComfyUI_windows_portable\ComfyUI\custom_nodes\comfyui_tensorrt\tensorrt_convert.py", line 7, in <module> import tensorrt as trt ModuleNotFoundError: No module named 'tensorrt'
bsakaguchi commented 2026-10-26 22:28:09 +00:00
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@mart-hill commented on GitHub (Jul 6, 2026):

I think this should help you. 🙂

<!-- gh-comment-id:4897552020 --> @mart-hill commented on GitHub (Jul 6, 2026): I think [this](https://github.com/Comfy-Org/Nvidia_RTX_Nodes_ComfyUI/issues/10#issuecomment-4044873158) should help you. 🙂
bsakaguchi commented 2026-10-26 22:28:09 +00:00
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@EddieSoloProjects commented on GitHub (Jul 26, 2026):

I think this should help you. 🙂

Nope it doesn't help for me. Been fighting with this all night.

<!-- gh-comment-id:5083619995 --> @EddieSoloProjects commented on GitHub (Jul 26, 2026): > I think [this](https://github.com/Comfy-Org/Nvidia_RTX_Nodes_ComfyUI/issues/10#issuecomment-4044873158) should help you. 🙂 Nope it doesn't help for me. Been fighting with this all night.
bsakaguchi commented 2026-10-26 22:28:10 +00:00
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@OchotaDariusz commented on GitHub (Sep 14, 2026):

I think this should help you. 🙂

Nope it doesn't help for me. Been fighting with this all night.

python -m pip install -U --no-build-isolation nvidia-vfx --index-url https://pypi.nvidia.com/

<!-- gh-comment-id:5672444480 --> @OchotaDariusz commented on GitHub (Sep 14, 2026): > > I think [this](https://github.com/Comfy-Org/Nvidia_RTX_Nodes_ComfyUI/issues/10#issuecomment-4044873158) should help you. 🙂 > > Nope it doesn't help for me. Been fighting with this all night. `python -m pip install -U --no-build-isolation nvidia-vfx --index-url https://pypi.nvidia.com/`
bsakaguchi commented 2026-10-26 22:28:10 +00:00
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@dapa5900 commented on GitHub (Oct 14, 2026):

This resolved the problem immediately for me on portable.

This issue can be resolved by explicitly forcing pip to use the correct NVIDIA index URL (https://nvidia.com). This ensures the pre-compiled packages are fetched correctly instead of triggering a failed source compilation.
Run these two final commands in your command prompt (CMD) to fix the installation:

# Step 1: Install the core package using the correct NVIDIA index
python_embeded\python.exe -m pip install nvidia-vfx --extra-index-url https://nvidia.com

# Step 2: Install the remaining custom node requirements
python_embeded\python.exe -m pip install -r ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes\requirements.txt --extra-index-url https://nvidia.com
<!-- gh-comment-id:6167026294 --> @dapa5900 commented on GitHub (Oct 14, 2026): This resolved the problem immediately for me on portable. This issue can be resolved by explicitly forcing pip to use the correct NVIDIA index URL (https://nvidia.com). This ensures the pre-compiled packages are fetched correctly instead of triggering a failed source compilation. Run these two final commands in your command prompt (CMD) to fix the installation: ``` # Step 1: Install the core package using the correct NVIDIA index python_embeded\python.exe -m pip install nvidia-vfx --extra-index-url https://nvidia.com # Step 2: Install the remaining custom node requirements python_embeded\python.exe -m pip install -r ComfyUI\custom_nodes\comfyui_nvidia_rtx_nodes\requirements.txt --extra-index-url https://nvidia.com ```
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