qt connet issue while running detect_from_video.py

[deschanel11]

Is there anyone who had

qt.qpa.xcb: could not connect to display 
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "/home/gyubin/anaconda3/lib/python3.9/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, minimal, minimalegl, offscreen, vnc.

Aborted (core dumped)

issues??

I searched for its solution but none of them works for me
I also tried to delete and reinstalled PyQt5 and 6 but it only added the errors.
Anyone who has solutions??

[KenChen701]

I met the same problem. Did you solve it?