@Vasily: I solved my issue by force-extracting the content of the libzstd1 deb archive. That restored the missing shared library and after that everything seems to work as it should again (all updates installed).
# dpkg-deb -x /var/cache/apt/archives/libzstd1_1.3.3+dfsg- 2ubuntu1_amd64.deb / maybe the same work-around would work for you -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1764858 Title: Can't update / install / delete packages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/apt/+bug/1764858/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
