The /reviewer command that Skara defines for crediting reviewers is broken on Gitlab. This is because Gitlab defines its own /reviewer command, but it means something completely different. In Gitlab it's a request for a review, and you can only request one review at a time.

A user was asking about this and I suggested using the Skara CLI to potentially get around the problem. That wasn't successful either. The CLI will just try to add a comment with /reviewer. This works even worse because the CLI will then attempt to parse the reply from the server and throw an NPE.

To solve this we need to rethink the /reviewer command (or slash commands in general) as they clash with Gitlab's built in slash commands.