If you encounter this issue
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: xcb.You can resolve the issue by installing the xcb package
# dnf install xcb*
Last metadata expiration check: 1:39:51 ago on Tue 09 May 2023 11:47:04 AM +08.
Package xcb-util-0.4.0-10.el8.x86_64 is already installed.
Dependencies resolved.
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Package Architecture Version Repository Size
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Installing:
xcb-util-image x86_64 0.4.0-9.el8 appstream 20 k
xcb-util-keysyms x86_64 0.4.0-7.el8 appstream 15 k
xcb-util-renderutil x86_64 0.3.9-10.el8 appstream 18 k
xcb-util-wm x86_64 0.4.1-12.el8 appstream 31 k
Transaction Summary
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Install 4 Packages
Total download size: 83 k
Installed size: 134 k
Is this ok [y/N]: y
The Linux Cluster 