I was like, why am I not getting this error, but then realised that the first thing I did after EOS installation was replacing firewalld with UFW. 
And now I remember why. I’ve had much less issues with UFW over the years. And as someone pointed out, it’s more integrated with KDE.
its integrated in the same way over plasma-firewall kcm integration?
I just noticed it was missing… I installed the packages. But the Icon on the right side of the task bar (Plasma) isn’t showing up again. Any clue how to get it back? I looked through “Mini-Apps” but i don’T seem to be able to add it there..
I believe it is a systemd user service. I have you tried logging out and logging back in?
Thank you.. I’m stupid i should have tried that before posting. I only tried restarting firedwalld service which usually would bring the icon back as well, however that didn’t work but a restart worked 