Creating site with character '+' in title results in failure

I created a private c++ repository called 'compiler++'. Since that is not a valid URL name, the url becomes 'jakoblaegdsmand/compiler'. When redirected to this page i just see "Please while we setup your repository" and this page refreshed every 5 seconds or so. It just hangs here. It seems that an error happened and the repo never got created.

The problem is that i don't to the menu of this repository, so I can't remove it.