Attempting to upgrade Mattermost Version 5.39.0 to the most recent version 7.7.1. Attempted to upgrade to the most recent version, but kept getting an error message.
Hi @AlexGi and welcome to the Mattermost forums!
This is not the correct way to upgrade Mattermost, please have a look at the official upgrade instructions and please make sure to create a backup first.
Not sure what exactly happened here now, did you also move the /opt/mattermost folder away before or did you just try to move one folder over the other?
https://docs.mattermost.com/upgrade/upgrading-mattermost-server.html