I'm getting the exact same "error", and if I enter a new one and click "Create", it doesn't show anything different (even the error message states the previous

I'm getting the exact same "error", and if I enter a new one and click "Create", it doesn't show anything different (even the error message states the previous name), but if I click the link to add pictures, it just opens a new tab with the same page... I believe this is still an unfinished product. A little more info would be much appreciated.