[Bug Hunt - NEW BUG]504 Gateway Time-out

[twicoder]

1. Try to open URL: http://community-app.topcoder.com/challenges/10000090909090909090909090909
2. Long time no response

[birdofpreyru]

I'll accept it with 1 point, though it is kind of dublicate of #190

[elfman]

This bug is different with #190. It's cause by the server, server does not return anything response when challengeId is wrong, which make the link time out.
Except: Server returns 'null' or other error msg when challenge id is not exist. At least, don't make the link time out.

Edit: Sorry, I make a mistake, the gateway timeout is caused by server rendering failure, not by backend