I'm writing you this from my old Xubuntu 18.04 backup install.
I'm currently running Linux Mint 20 XFCE. Yesterday the power went off. I don't know if it had anything to do with it or not. But today I can't get online with it.
I've been google searching all day long and can't find one thing that is helpful. I tried several things, and nothing helps. I also tried posting in the Linux Mint forums and nobody has been helpful with this either. I keep getting this error.
The information I found on this is all over the place.... I can't tell from it where to start diagnosing.