What have you tried:
What is the error:
kde-config-gtk-style
can you show the previous command that you ran?
im using sudo apt upgrade
this is not the recommended command to upgrade. try sudo apt full-upgrade and see if the issue still remains
i already try that the issue still remain
your updating from a root prompt not a normal user with elevated privileges…
from your normal kali user (not the root account)
sudo apt update
sudo apt full-upgrade
ohh didn’t missed that one. You shouldn’t use the root account anyways. just use sudo. using root can lead to breaking of your system if you don’t know what you’re doing