I create a new virtual env and installed labelme alone, it worked. Then I installed opencv-python and labelme is failing,
pip install labelme
pip install opencv-python
labelme images --nodata
QObject::moveToThread: Current thread (0x2790590) is not the object's thread (0x2e9bc80). Cannot move to target thread (0x2790590)
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/home/skycam/aTYQI/vi/lib/python3.8/site-packages/cv2/qt/plugins" even though it was found. This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: xcb, eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, webgl.
Aborted (core dumped)
