I was trying to make kde apps to be more better in xfce de, so I tryed kavantum manger, and then i tryed qt5 app, i get that message after login
I have executed that command echo "remove QT_STYLE_OVERRIDE=qt5ct" >> ~/.profile as the qt5 app asked me to do
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I tried to solve that by excute that comand echo "export QT_STYLE_OVERRIDE=kvantum" >> ~/.profile ,that make kvantum effect kde apps but i still get that error message in login