I am trying to deploy a django app on heroku for the first time and I am stuck on the same problem for a loooooong time : Everytime I do heroku open My app crashes and heroku logs says : 2015-03-27T13:40:21.519526+00:00 heroku[api]: Release v12 created by lucasberbesson@gmail.com 2015-03-27T13:40:21.672768+00:00 heroku[web.1]: State changed from crashed to starting 2015-03-27T13:40:26.353481+00:00 heroku[web.1]: Starting process with command `: gunicorn lafusee.wsgi --log-file -` 2015-03-27T13:40:28.926043+00:00 heroku[web.1]: State changed from starting to crashed 2015-03-27T13:40:28.916906+00:00 heroku[web.1]: Process exited with status 0 2015-03-27T13:40:50.161396+00:00 heroku[api]: Scale to web=1 by lucasberbesson@gmail.com 2015-03-27T13:43:01.661152+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=murmuring-beach-3485.herokuapp.com request_id=997024d3-f75e-4e54-80a6-47384b4d4700 fwd="83.202.1.92" dyno= connect= service= status=503 bytes= 2015-03-27T13:43:02.345073+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=murmuring-beach- 3485.herokuapp.com request_id=7516bea9-fc53-4db2-af0a-2acc479db77d fwd="83.202.1.92" dyno= connect= service= status=503 bytes= My Procfile ( wsgi.py in lafusee app): web : gunicorn lafusee.wsgi --log-file - How can I get a more descriptive error message from heroku to try to debug my project ? Continue reading...