After I lock the screen at the end of the day, when I come to work the next day, the lock screen will have an authentication error, and I can't enter any characters, and I can't reboot via the top right corner, I can only choose to press the boot button to reboot, this didn't happen when I first installed zorin os, after I recently updated the system, this started to happen.
Sorry, I didn't have a screenshot, so I looked for pictures similar to mine from the forum.
sudo apt-get install --reinstall zorin-os-desktop
sudo apt-get install --reinstall gnome-shell
as it maybe awhile until you can test the results,
sudo dpkg-reconfigure gnome-shell
Lets see how that goes.