OctoPrint tells me my Python environment is outdated and will soon no longer be supported, how do I upgrade?

Whew! With the help of ChatGpt, I was able to create a new user and log in again.

jneilliii and ChatGpt, you saved me, thanks for your patience!

Simple search here would have helped too.

Ok, but I haven't forgotten it, it was just no longer valid - for whatever reason.
Anyway, the problem is solved