如您所见，my application显示错误：
应用程序中发生错误，无法提供您的页面 . 如果您是应用程序所有者，请检查日志以获取详细信息 .
我的日志告诉我，我有503错误，这应该是暂时的，但它不会消失：
2018-03-22T20：55：39.055965 00:00 heroku [router]：at = error code = H10 desc =“App crashed”method = GET path =“/”host = essentialeconomy.herokuapp.com request_id = 87ac3c0 2- 5498-44bb-903d-671a0572e798 fwd =“162.192.104.135”dyno = connect = service = stat us = 503 bytes = protocol = https 2018-03-22T20：55：40.466843 00:00 heroku [router]：at = error code = H10 desc =“App crashed”method = GET path =“/ favicon.ico”host = essentialeconomy.herokuapp.com request _id = 10333c17-808c-466c-9151-d520576384b4 fwd =“162.192.104.135”dyno = connect = se rvice = status = 503 bytes = protocol = https 2018-03-22T20：57：02.854906 00:00 heroku [router]：at = error code = H10 desc =“App crashed”method = GET path =“/”host = essentialeconomy .herokuapp.com request_id = 0abca13 1-6b54-49fc-aa4b-9391338e452c fwd =“162.192.104.135”dyno = connect = service = stat us = 503 bytes = protocol = https 2018-03-22T20：57：04.256271 00:00 heroku [router]：at = error code = H10 desc =“App crashed”method = GET path =“/ favicon.ico”host = essentialeconomy.herokuapp.com request _id = 986d0dbd- 0e9f-464e-ad1e-c7eceb687bae fwd =“162.192.104.135”dyno = connect = se rvice = status = 503 bytes = protocol = https
这是我的Github回购 .
关于我如何排除故障的任何想法？