App crashed. Heroku Application Error

[jmelendev]

I am running into the following error messages in the heroku log. I haven't changed any of the code for months now but these are the errors I have been getting for the past 2 days now. Any Ideas?

018-11-30T13:18:41.960184+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=attic-records-app.herokuapp.com request_id=81d04ed3-d133-48c2-a976-7316478da1c5 fwd="67.191.48.251" dyno= connect= service= status=503 bytes= protocol=https
and
2018-11-30T13:18:42.981430+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=attic-records-app.herokuapp.com request_id=4479960d-8b13-4536-a7a6-518fad26375f fwd="67.191.48.251" dyno= connect= service= status=503 bytes= protocol=https
I tried restarting the dynos in Heroku but no luck.