heroku[router]: at=error code=H10 desc=”App crashed” method=GET path=”/”

heroku[router]: at=error code=H10 desc=”App crashed” method=GET path=”/”

2020?05?17T14:43:36.398942+00:00 heroku[router]: at=error code=H10 desc=?App crashed? method=GET path=?/? host=rainroom.herokuapp.com request_id=cd25b8f8-e509?455a-a019-e8f940e73593 fwd=?000.000.000.000″ dyno= connect= service= status=503 bytes= protocol=https2020?05?17T14:43:37.124714+00:00 heroku[router]: at=error code=H10 desc=?App crashed? method=GET path=?/favicon.ico? host=rainroom.herokuapp.com request_id=52309f75-ac3a-4d8c-9b7b-c5ab83f310a9 fwd=?000.000.000.000″ dyno= connect= service= status=503 bytes= protocol=https2020?05?17T14:43:48.068633+00:00 heroku[router]: at=error code=H10 desc=?App crashed? method=GET path=?/? host=rainroom.herokuapp.com request_id=61540db6?51c4?4cd5-a37a-713633c0baa9 fwd=?000.000.000.000″ dyno= connect= service= status=503 bytes= protocol=https

This problem occurred by your wrong port setting by manually

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From this.

Change to this.

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Because Heroku has to use their own port by themselves. but You can use your port when you are developing.

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