vax.herokuapp.com is down

[stemcoding]

If you try to go to http://vax.herokuapp.com it just says "We're sorry, but something went wrong"

Fortunately the internet archive saved version still works:
http://web.archive.org/web/20210228194207/http://vax.herokuapp.com/game

I'm not sure how the game still manages to work on the internet archive but it does. There may be some functionality that is missing. I haven't tinkered with it enough to tell.