This tutorial is about fixing Linux Mint not updating due to broken packages error. In this article, we are going to discuss the causes of broken packages, and show you how to fix them on Linux Mint.

see also:
https://www.siberoloji.com/fixing-broken-packages-in-linux-mint-a-stepby-step-guide/

Sometimes things break. You can find the most recent errors using a combination of journalctl, along with the classic tools sort and uniq.

journalctl --no-pager --since today --grep 'fail|error|fatal' --output json | jq '._EXE' | sort | uniq -c | sort --numeric --reverse --key 1

Sample Output
898172 "/usr/bin/dockerd"
752 "/usr/local/sbin/node_exporter"
30 "/usr/bin/gnome-shell"
26 "/usr/bin/cat"
22 "/usr/libexec/gsd-media-keys"
[...]