Problem executing scripts APT::Update::Post-Invoke-Success 'if /usr/bin/test -w /var/lib/command-not-found/ -a -e /usr/lib/cnf-update-db; then /usr/lib/cnf-update-db > /dev/null; fi'
sudo apt-get purge libappstream3
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libappstream3
https://itectec.com/ubuntu/ubuntu-e-problem-executing-scripts-apt-updatepost-invoke-success-error-during-apt-get-update/