So, someone from support department asked me to check the app as it was displaying blank information on a page.

I started debugging on the api which i found is doing the proboem. I checked and it was working a moment before but not now. Switched in debug mode to see what went wrong and it works again. This happen multiple times.

Before doing anything else i asked our api developer to check if api is working. He said it should work now and problem has been fixed.

Later i found out that he was doing debugging/changing code on production server instead of his local machine or test server.