我正在使用python flask创建一个应用程序，并使用heroku进行部署，但是此错误不断出现，并且无法部署我的应用程序。怎么了？我将procfile作为web gunicorn app：app，并且requirements.txt已更新，但好像app一直崩溃。我的代码在github上为https://github.com/sq125/snaplost
2020-07-16T13:40:42.000000+00:00 app[api]: Build succeeded
2020-07-16T13:40:42.078480+00:00 heroku[web.1]: Process exited with status 3
2020-07-16T13:40:42.121782+00:00 heroku[web.1]: State changed from up to crashed
2020-07-16T13:40:56.482029+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=snaplost.herokuapp.com request_id=06a2c44a-fa2c-497c-8b60-a5ff728903dd fwd="115.66.141.105" dyno= connect= service= status=503 bytes= protocol=https
2020-07-16T13:40:56.966379+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=snaplost.herokuapp.com request_id=b766577a-f155-4e5b-8332-86ab5f2c9366 fwd="115.66.141.105" dyno= connect= service= status=503 bytes= protocol=https