I was playing with the theming in KDE and suddenly I noticed that KDE launcher application is finding only files.
If for example I'm searching for Firefox it's showing my files and "run firefox" but not the actual application. Some applications are not showing at the search result at all and showing only files.
'K' runner does the same thing.
Is anyone knows how to fix this?

Thank you.

I did a lot of searching in the internet and I found that 'application' is missing in runners under 'plasma search' in system settings.
Is anyone know how can I get it back? I tried to find the package contain the runners but no luck.

I solved the problem!
Just in case someone has that problem, I reinstall plasma-workspace and the problem solved after reboot.