Moving Repositories after backup
After loading a fresh server with a gitlab backup, attempted to move a repository from a user namespace into a group. This failed.
The destination group was empty and didn't have any projects in it.
I checked on the server inside the repositories folder. This group did not have a folder for this group.
Workaround: After creating a dummy project inside this group, folder was created and project could be moved into this group successfully.
I suspect the backup restore didn't recreate this empty folder which is what caused this issue.