"Package: gnome-control-center (not installed)"
Indicates that you somehow uninstalled the package for "Settings". Can you please run:
sudo apt install gnome-control-center
sudo apt install ubuntu-desktop
"Package: gnome-control- center (not installed)"
Indicates that you somehow uninstalled the package for "Settings". Can you please run:
sudo apt install gnome-control- center
sudo apt install ubuntu-desktop