Error when using Mediapipe: numpy.core.multiarray failed to import

[gj1342]

Describe the bug
Python: Traceback (most recent call last):
File "", line 1232, in handle_fromlist
File "", line 241, in call_with_frames_removed
File "C:\Users\ACER\AppData\Roaming\Blender Foundation\Blender\4.2\scripts\addons\BlendArMocap\src\cgt_mediapipe\cgt_mp_core\cv_stream.py", line 4, in
import cv2
File "C:\Program Files\Blender Foundation\Blender 4.2\4.2\python\cv2_init.py", line 181, in
bootstrap()
File "C:\Program Files\Blender Foundation\Blender 4.2\4.2\python\cv2_init.py", line 153, in bootstrap
native_module = importlib.import_module("cv2")
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "C:\Program Files\Blender Foundation\Blender 4.2\4.2\python\Lib\importlib_init_.py", line 126, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
ImportError: numpy.core.multiarray failed to import

To Reproduce
Steps to reproduce the behavior:

1. Go to the sidebar and click BlendAR
2. Detect Webcam with 0 slot and 4 value Key Step
3. Target Hands and press start detection

Expected behavior
OpenCV will start and detect my hands

Screenshots
Always copy the log message from the system console if an error occurs. Do not create screenshots of error messages. If applicable, add screenshots to help explain your problem.

Desktop (please complete the following information):

• OS: Windows 11
• Blender VersionL Blender 4.2
• BlendArMocap Version: 1.6.1

[WolfgangNS]

I had the similar issue, only with movie instead of webcam. While I did try some miscellaneous fixes (run as administrator, install opencv-python), ultimately my fix was just to specify the file path. Easy as that.

[artistmatej]

I deleted numpy version 2.x and it started to work (I think numpy version 1.x should be installed).