Error:
Using Theano backend.
QObject::moveToThread: Current thread (0x5586ca2ace60) is not the object's thread (0x5586ca32e830).
Cannot move to target thread (0x5586ca2ace60)
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/home/shikha/anaconda3/envs/sultani_again/lib/python3.7/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
Solution : If your python program "test.py"needs PyQt5 to run and we can insatll PyQt5 with "pip install PyQt5" and the above mentioned error can be removed as below:
1. set QT_QPA_PLATFORM=offscreen
or
2. QT_QPA_PLATFORM=offscreen python test.py
Another solution is to downgrade the PyQt5 version, in my case it was PyQt5-5.15.1 with Ubuntu 16.04, then I downgraded it to PyQt5-5.9.2 using pip install PyQt5==5.9.2 with Ubuntu 16.04.
Shikha Dubey So when you downgrade the PyQt5 version, the error is gone or you still facing the problem.
In My case PyQt5 works good in windows by now I want to transfer the same code on Linux (Ubuntu) I face the same problem.
Abid Hussain in my case downgrading the PyQt5 version worked..before it was showing the above error...after that it ran so smoothly...i hope you can also solve your problem using one of the three above mentioned solutions!!
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