I'm new to linux.
Out of curiosity, I run some commands as sudo to mess up with permissions. When I restarted my system, most of the apps give firejail error.
For Example If I run firefox then it says:
Error: cannot create /run/firejail/profile/3535
This same error appears in most of the apps like rhythombox, vlc, dolphin when i launch them in terminal by just typing their name. When I launch them directly, nothing happens after some loading. I hope I'm not the first one to get this error because of my stupidity. Please Help.
This Is Happening due to problem in config files in firejail.
Just reinstall it with:
sudo apt reinstall firejail
It worked for me.