Whenever I'm trying to make a POST request on my heroku app I get 503 error. It works completely fine locally.
at=error code=H12 desc="Request timeout" method=POST path="/login" host=classes-time.herokuapp.com status=503 bytes=0 protocol=https
Here is the full code in github repo: https://github.com/losbiw/Classes-time
I set my environment variable in heroku, so I've got no any clue what's the problem. I checked all the url's in my code for a couple of times, so am almost completely sure that it's not the reason why project isn't working.