로그인 버튼을 누르면 다음과 같은 에러 메시지가 뜨는데
이유가 뭘까?
도와줘~~
Application error
An error occurred in the application and your page could not be served. If you are the application owner, check your logs for details. You can do this from the Heroku CLI with the command
heroku logs --tail