Hi, LUBE!
Try to clean caches and restart PC afterwards:
The most pure way to clean is:
- Log out from GUI user session.
- Switch to virtual terminal ttyN (Ctrl+Atl+FN), where the
Nis a single digit (buttons F1, F2, F3, etc). - Log in.
- Enter clean cache commands.
- Restart by
systemctl reboot.
If that not helped and still have no answers here, then meanwhile you can try go this way: [HowTo] Request support