You’re using Mint.
-
Mint isn’t supported because it’s an unstable derivative of Ubuntu.
I’ve had many cases where Mint works great as a desktop Linux (which is true) but the moment it gets pressed to run a server then it falters. -
I once spent about 2 full days tracking a phantom problem which I could not reproduce. When I confirmed the user was using Ubuntu/Debian/Redhat/Fedora is when I got “Mint” as the reply. When the user reinstalled using Ubuntu, ALL the problems were immediately gone. No anomalies / issues at all.
-
Mint does things their way which goes against the majority of the community.
-
How Mint sets permissions on directories and how it manages /home/USERNAME is different than the other distros.
Because of all this, and their changing the rules from version to version, it’s not stable enough to vet and support.