我在Heroku上收到此错误：
2018-07-09T04：37：55.732211 + 00：00 heroku [router]：at =错误代码= H10 desc =“应用程序崩溃”，方法= 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字节= protocol = https