Heroku App crashes

Hello everyone,

somehow I currently have fuckups with my Python app deployed to Heroku. It was working just fine for several days then now somehow the app crashes when trying to reach it. I get the error

> 2019-06-05T08:42:49.422618+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=foobar.herokuapp.com request_id=950da4f1-b8e4-4a45-a514-c473dcf56eff fwd="" dyno= connect= service= status=503 bytes= protocol=http

Any idea how to solve this? Somehow it’s trying to connect to favicon but this is not working…

Thanks a lot!