Could not find the Qt platform plugin "wayland" in opencv path

Expected behaviour

Write here how did you expect the library to function.

Actual behaviour

Write here what went wrong.

Warning: Ignoring XDG_SESSION_TYPE=wayland on Gnome. Use QT_QPA_PLATFORM=wayland to run on Wayland anyway.
qt.qpa.plugin: Could not find the Qt platform plugin "wayland" in "/home/firefly/venv/lib/python3.9/site-packages/cv2/qt/plugins"
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.

Aborted (core dumped)

Steps to reproduce

• example code

import cv2
cap=cv2.VideoCapture(8)
while True:
    ret,frame =cap.read()
    frame=cv2.flip(frame,1)
    cv2.imshow('frame',frame)
    if cv2.waitKey(1)&0xff==ord('q'):
        break
cap.release()
cv2.destroyAllWindows()

• operating system: ubuntu 20.04
• architecture (e.g. x86): aarch64
• opencv-python version: opencv_python-4.5.1.48-cp39-cp39

Issue submission checklist

• This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
• I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
• The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
• I'm using the latest version of opencv-python