If you are staying on Zorin OS 16:
Sometimes, bad things happen even to good people. Maybe it was a power outage or some spilled coffee... But whatever it was, you now must wipe and reinstall Zorin OS.
What makes this particularly daunting is all your software you have installed must now be reinstalled.
(EDIT: I am removing the script option as some report they work and some report they do not work. Y-PPA-Manager is a lot easier and works every time.)
You can use Y PPA Manager GUI tool to back up your current repositories.
Ru…
If you are moving up to Zorin OS 17; then some of the above may still be helpful. Not all that you installed on 16 may still be maintained in Zorin OS 17 and the Jammy Jellyfish repos.
sudo dpkg -l | awk '/^ii/ { print $2 }' >package-list
And then install only the maintained packages in the list.
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