Error code 500

I’m enrolled in an ASU online sign language course (ASL 101 Online by my professor and user hannah.cheloha), currently in unit 1.5, basic math and numbers. Whenever I begin the unit, after the third or fourth word, I get an error code 500 message and I get completely kicked out. Tried running the app in both Chrome and Safari to no avail. Any advice is much appreciated since I really need the module! Thanks.