Won't move on to next Waypoint #1386
Description
Challenge http://beta.freecodecamp.com/challenges/waypoint-use-a-css-class-to-style-an-element won't move on to next Waypoint. After changing the code as indicated and clicking the "Go to my next challenge" button, it goes to a 502 Bad Gateway page instead of going to the next Waypoint.
The Waypoint (Waypoint 10) is checked off on the map though, so it does know that the challenge has been completed, but it doesn't link to the next challenge.