Not sure if this is the right forum, but I'm hoping someone can help me.
We had a web app running on our web server for a while now. Suddenly it stopped working and displays a 502 error -
Web server received an invalid response while acting as a gateway or proxy server.
I have never seen this type of error and I have no Idea how to work it (I'm just an entry level programmer). I did manage to get the DB and the original code and they work fine on a local environment.