[ComfyUI-Manager] Installation failed: ModuleNotFoundError: No module named 'comfy'

[tobiaswuerth]

Installing a node pack extension doesn't work.
I just updated to version 0.11.1

Logs show this:

FETCH DATA from: C:\...\ComfyUI\.venv\Lib\site-packages\comfyui_manager\custom-node-list.json [DONE]
Download: git clone 'https://github.com/evanspearman/ComfyMath'
[!] Traceback (most recent call last):
[!]   File "C:\...\ComfyUI\.venv\Lib\site-packages\comfyui_manager\common\git_helper.py", line 12, in <module>
[!]     from comfyui_manager.common.timestamp_utils import get_backup_branch_name
[!]   File "C:\...\ComfyUI\.venv\Lib\site-packages\comfyui_manager\__init__.py", line 6, in <module>
[!]     from comfy.cli_args import args
[!] ModuleNotFoundError: No module named 'comfy'
[ComfyUI-Manager] Installation failed:
Failed to clone repo: https://github.com/evanspearman/ComfyMath

After restarting ComfyUI, please refresh the browser.

It happens for all packages I tried.

Platform: Windows
Python version: 3.12.9 
Total VRAM 24564 MB, total RAM 196363 MB
pytorch version: 2.8.0+cu129
Device: cuda:0 NVIDIA GeForce RTX 4090
ComfyUI version: 0.10.0

(ComfyUI) PS C:\...\ComfyUI> pip3 install comfyui_manager --upgrade
Requirement already satisfied: comfyui_manager in c:\users\tobias\documents\comfyui\.venv\lib\site-packages (4.0.5)