This isn’t a Discourse issue, but an OS issue. There are many sites describing how to upgrade your OS.
My recommendation is to create a new VM with a new OS and then Move a Discourse site to another VPS with rsync
This isn’t a Discourse issue, but an OS issue. There are many sites describing how to upgrade your OS.
My recommendation is to create a new VM with a new OS and then Move a Discourse site to another VPS with rsync