Resolved. I'm having problems running Tootctl from terminal.
Regardless how I switch user to #Mastodon, Ruby is not found when I run tootctl.
#MastoAdmin #SelfHost #TootCtl
When I run WHOAMI it shows I am the Mastodon user.
I've also tried
sudo su mastodon
suso su - mastodon
su - mastodon
My instance is running ok. ( https://OldFriends.Live )
RESOLVED thanks to @jan https://oldfriends.live/@jan@toot.io/109729634349707092 : I didn't bash after I logged in as the Mastodon user to run the commands and was using sh.