Magento 1.9 Admin notification bar display 502 bad gateway

Question

My Magento 1.9 admin suddenly show a 502 bad gateway message. What is wrong? It says nginx, but my Magento is running on Apache server.

I do have a nginx server running besides Apache. But the message still displays even if I stop the nginx service.

Answer 1

If you are using Nitrogento extensions then it could be because of them. Seems like their servers are offline, and extension returning 502 Bad Gateway

http://www.nitrogento.com/