502 Bad Gateway: Identity Services


I am consuming the Identity Management API services in sandbox environment. I used this service two days before and I was able to get access token. Now initially when I am trying to use Authorise web user API, I am constantly getting 502 status code and Page with message Bad Gateway. Can anyone look into this issue and please help me.

Thank you in advance !!!

I am also facing issue error 404 if I can resolve your issue then I must do it