Uh. sleepychan is throwing up 502 errors, has it pulled a Hypnochan and just imploded on itself or is their maintenance going on?

It's 404 errors you gotta worry about. This site gives me 502 errors a lot. It's just a server issue. Give it a while and try again. It may only take a few minutes; it may take a few hours.

I think 502 might be just overloaded servers / bad configs. In non-peak hours it should be less prone to it.