SUMMARY Clicking "Configure updates" on the Settings menu opens a broken systemsettings page that contains only a logo and two misplaced labels "Frequently used" and "KDE wallet"
I am unable to reproduce
*the problem
It also happens to me in Arch Linux while using the packages in the kde-unstable repository. https://i.imgur.com/uxGMUuK.png
Caused by BUILD_KCM=OFF. I guess now that there are more options it makes sense to enable this again on Arch.