我在Heroku上收到此错误：
2018-07-09T04：37：55.732211 00:00 heroku [router]：at = error code = H10 desc =“App crashed”method = GET path =“/ favicon.ico”host = newcri.herokuapp.com request_id = b04ee149-4ed1-442f-beb1-4b71c9fd492f fwd =“49.34.129.7”dyno = connect = service = status = 503 bytes = protocol = https