Error 502 Bad Gateway

The only reason i'm on here now is because i am accessing the site directly and i'm not using a proxy...
Anyone know how to really permanently fix the problem?
~I've tried alternative browsers-nothing
~Tried safe mode-nothing
~Tried HTTPs mode-it halfway worked but only with facebook
Anyone know how to really permanently fix the problem?
~I've tried alternative browsers-nothing
~Tried safe mode-nothing
~Tried HTTPs mode-it halfway worked but only with facebook