I'm sorry for you, but your upgrade seems to have gone wrong. apt (well, libapt-pkg5.0) certainly depends on libzstd1, so it should be there - these kind of dependencies get created automatically.
Please run apport-collect 1764858 or attach at least /var/log/apt/term.log; or read it and see yourself what is broken. ** Changed in: apt (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to apt in Ubuntu. https://bugs.launchpad.net/bugs/1764858 Title: Can't update / install / delete packages Status in apt package in Ubuntu: Incomplete Bug description: Description: Ubuntu Bionic Beaver (development branch) Release: 18.04 After todays upgrade: vasily@vasily-desktop:~$ sudo apt-get update [sudo] пароль для vasily: apt-get: error while loading shared libraries: libzstd.so.1: cannot open shared object file: No such file or directory To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1764858/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp