Hi @RbDev! Can you help take a look at step 6 on this doc to see if it helps, e.g. there is a note about having enough free space: https://docs.mattermost.com/install/config-mattermost-server.html.
Can you also help take a look at this thread with some tips for troubleshooting: https://github.com/mattermost/mattermost-server/issues/8714?
If these don’t help, just let me know and I’ll ask an engineer to continue to troubleshoot.