I'm running code sudo apt update and fetch error ModuleNotFoundError: No module named 'apt_pkg'. Please, help me solve it. sudo apt update Hit:20 http://ppa.launchpad.net/xorg-edgers/ppa/ubuntu bionic InRelease Fetched 93,3 kB in 2s (42,4 kB/s) Traceback (most recent call last): File "/usr/lib/cnf-update-db", line 8, in <module> from CommandNotFound.db.creator import DbCreator File "/usr/lib/python3/dist-packages/CommandNotFound/db/creator.py", line 11, in <module> import apt_pkg ModuleNotFoundError: No module named 'apt_pkg' Reading package lists... Done E: Problem executing scripts APT::Update:ost-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' E: Sub-process returned an error code Continue reading...