After an upgrade (I think it was from version 8.1 to 8.3), my Mattermost doesn’t start/work anymore. I get the following messages in
/var/log/gitlab/mattermost/current each second:
panic: The database schema version of 1.1.0 cannot be upgraded. You must not skip a version. and then some Go dump of go routines.
How can I solve this problem? My mattermost content is nearly empty, so I don’t mind if the solution is to recreate it from scratch, but how do I do this?