尝试使用flask和heroku构建应用程序，以允许用户上传txt文件作为第一步；
我的文件在这里； https://github.com/EmileVdHeyde/WhatsAppAnalysis
构建成功后，我遇到此错误；
2020-06-12T20:42:55.000000+00:00 app[api]: Build succeeded
2020-06-12T20:43:11.863078+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=waanalysis.herokuapp.com request_id=6bee3a21-e273-413b-b76a-27e105c529cf fwd="102.182.122.73" dyno= connect= service= status=503 bytes= protocol=https
2020-06-12T20:43:12.311734+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=waanalysis.herokuapp.com request_id=666c2cd4-ec6d-4616-af8f-b1425276cbe7 fwd="102.182.122.73" dyno= connect= service= status=503 bytes= protocol=https ```