При запуске скрипта на PyQt6 qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found

При запуске скрипта на PyQt6 из под Ubuntu 22.04.2 LTS выдает ошибку:

qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" 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: linuxfb, wayland-egl, minimal, eglfs, wayland, vnc, vkkhrdisplay, minimalegl, xcb, offscreen.

Этот же скрипт под Виндой10 запускается без проблем. Пробовал установить QT Creator, Qt Designer - не помогло.