It seems the qt5-base is broken, or as far as I read. How would I go about downgrading it to make it work as it should or is there a way I can download something else to fix it?
Info gotten from: Qt5-base 5.15.2+kde+r203-1 severely breaks .desktop files - #17 by UltraBlack
and 439185 – qt5-base breaks desktop files