Fedi.Tips@FediTips@social.growyourown.services
@bob@beamship.mpaq.org
I'm not a sys admin or developer so I'm not sure how to help directly, but you might want to check the instructions at https://github.com/mastodon/mastodon/releases/tag/v4.5.0 and raise this as an issue on the Mastodon Github if there's no existing issue at https://github.com/mastodon/mastodon/issues (I couldn't find an existing issue but I'm not 100% sure what to search for).
JustBob@bob@beamship.mpaq.org
@FediTips@social.growyourown.services same here, I remember updating ruby but haven't had a chance to find the process again, yet 😫