I hope you can help me. I installed Ubuntu 18.04 a few days ago and, while trying to configure it and installing new packaged and software, I think I did something bad. I think it could be related with installing python. Anyway, netiher the gnome-terminal or gnome-tweaks can´t start anymores. Also, when I try to update (sudo apt-get update) it gives me the following error:
sh 1: /usr/lib/cnf-update-db: not found Reading package lists... Done E: Problem executing scripts APT::Update::Post-Invoke-Succes 'if /usr/bin/test -w /var/lib/command-not-found -a -e /usr/lib/cnf-update-db > /dev/null; fi' E: Sub-process returned an error code
I am relativeley new to Linux so I have no clue how can I fix this. Any idea? Even to restore defult configurations/settings?
Thank you very much!