Problem solved.
Refering to the following topic: https://askubuntu.com/questions/558446/my-dconf-gsettings-installation-is-broken-how-can-i-fix-it-without-ubuntu-reins
After applying Dmitry's fix, I was able to update the PC and install updates. It fixed the frequent freezes and crashes that I used to have.
Problem solved.
Refering to the following topic: https:/ /askubuntu. com/questions/ 558446/ my-dconf- gsettings- installation- is-broken- how-can- i-fix-it- without- ubuntu- reins
After applying Dmitry's fix, I was able to update the PC and install updates. It fixed the frequent freezes and crashes that I used to have.