Trouble accessing classEx for public goods game

[Shantayanan Devarajan]

I am trying to get access to the links to use the public goods game in the CORE Economic Experience.  Whenever I click on login, I get the error message below.  Please help me login to the game.  Thank you.

Shanta Devarajan

"The page could not be loaded due to slow connection or an error. Try to reload the page and check in the console (F12). If the problem persists, check your program for errors."