Using this thread - none of it worked for me: How can I "provide proper authorization" to the KDE Software Updates program?
However when I click on Updates then it starts checking for any and shows them. I click on Install and it still shows: This operation cannot continue since proper authorization was not provided.
This used to work and prompt me for password.
I have: Kubuntu 18.04, KDE Plasma Ver: 5.12.7
Any guidance would be appreciated.