Migrated to New Server

I am testing the migration of MM Teams from a Windows Server to Linux ( Ubuntu ) and am at the point where I am trying to start the MM services. Unfortunately, the start fails and here is the status:

Loaded: loaded (/lib/systemd/system/mattermost.service; enabled; vendor preset: enabled)
Active: activating (auto-restart) (Result: exit-code) since Tue 2022-12-20 14:31:06 UTC; 2s ago
Process: 1193229 ExecStart=/opt/mattermost/bin/mattermost (code=exited, status=217/USER)
Main PID: 1193229 (code=exited, status=217/USER)

Any help would be appreciated!

Figured it out. Forgot to create the mattermost user and group.