Could not find the Qt platform plugin "windows" in ""

[hymancheng]

I used 'upx' in the pyinstaller command, when I execute exe file.
The error is as follows:
qt.qpa.plugin: Could not find the Qt platform plugin "windows" in ""
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.

When I remove 'upx' command, exe is running normally.

[rokm]

That's a known issue with upx - see upx/upx#107. So you'll either need to disable upxaltogether, or add all (used) Qt plugins to upx_exclude, or use develop branch, which should automatically prevent Qt plugins from being processed with upx (see #5881).