Can't use code editor, 500 internal server error


Just started MySQL course, the CodeAcademy connection light, stays white (Connecting), I can see the information and instructions, but the code editor shows like nothing it's opened. (I can't type anything)
When going to chrome console, I can see there is a:
Failed to load resource: the server responded with a status of 500 (Internal Server Error) when querying:
When I enter manually it says:

"{"error":{"code":"0","message":"Unable to handle your request","details":[{"target":"NoMethodError","message":"undefined method `roles' for nil:NilClass"}]}}"
So this seems likely to be a backend error.

This is on:

OSX 10.11
Chrome 50.0.2661.94 (64-bit)

Weird errors on my account

A post was merged into an existing topic: Weird errors on my account