Qt5ct leaving some parts as blank white

For many bits of qt, such as the main panel of dolphin, it just leaves it a blank white. I can change the color if I use kde system settings, but having to use two applications to change the theme is obnoxious. Is there a way to fix this?

Is the QT_QPA_PLATFORMTHEME environment variable set to qt5ct?

Hi,please post answer this command: