Heroku application error logs, cannot run heroku open

  application-error, django, heroku, python

I just made my first application. when I run Heroku open I get an error
"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"
what could possibly be the problem?Can a problem with DJANGO_SECRET_KEY cause such problem ?

this is my logs

2021-06-11T05:06:11.906892+00:00 app[api]: Initial release by user a
2021-06-11T05:06:11.906892+00:00 app[api]: Release v1 created by user a
2021-06-11T05:06:12.046032+00:00 app[api]: Enable Logplex by user a
2021-06-11T05:06:12.046032+00:00 app[api]: Release v2 created by user a
2021-06-11T06:24:58.000000+00:00 app[api]: Build started by user
2021-06-11T06:25:45.000000+00:00 app[api]: Build failed -- check your build output: https://dashboard.heroku.com/apps/67a0bf8e-56f4-41bd-b9de-b02c9ca20f13/activity/builds/b4469f36-8883-468b-95a2-aadaa03ff662
2021-06-11T06:36:08.000000+00:00 app[api]: Build started by user a
2021-06-11T06:36:39.000000+00:00 app[api]: Build failed -- check your build output: https://dashboard.heroku.com/apps/67a0bf8e-56f4-41bd-b9de-b02c9ca20f13/activity/builds/254007fa-69b7-45d7-9490-5bd0643ec3cf
2021-06-11T06:37:40.559478+00:00 app[api]: Set DISABLE_COLLECTSTATIC config vars by user a
2021-06-11T06:37:40.559478+00:00 app[api]: Release v3 created by user a
2021-06-11T06:38:00.000000+00:00 app[api]: Build started by user a
2021-06-11T06:38:41.947391+00:00 app[api]: Running release v4 commands by user a
2021-06-11T06:38:41.947391+00:00 app[api]: Attach DATABASE (@ref:postgresql-fitted-13790) by user a
2021-06-11T06:38:41.960986+00:00 app[api]: @ref:postgresql-fitted-13790 completed provisioning, setting DATABASE_URL. by user a
2021-06-11T06:38:41.960986+00:00 app[api]: Release v5 created by user a
2021-06-11T06:38:42.248836+00:00 app[api]: Release v6 created by user a
2021-06-11T06:38:42.248836+00:00 app[api]: Deploy 631aaa14 by user a
2021-06-11T06:38:42.263855+00:00 app[api]: Scaled to [email protected]:Free by user a
2021-06-11T06:38:47.377590+00:00 heroku[web.1]: Starting process with command `: gunicorn taskmate.wsgi`
2021-06-11T06:38:49.701398+00:00 heroku[web.1]: Process exited with status 0
2021-06-11T06:38:49.759979+00:00 heroku[web.1]: State changed from starting to crashed
2021-06-11T06:38:49.786811+00:00 heroku[web.1]: State changed from crashed to starting
2021-06-11T06:38:53.000000+00:00 app[api]: Build succeeded
2021-06-11T06:38:54.704761+00:00 heroku[web.1]: Starting process with command `: gunicorn taskmate.wsgi`
2021-06-11T06:38:56.938703+00:00 heroku[web.1]: Process exited with status 0
2021-06-11T06:38:57.009000+00:00 heroku[web.1]: State changed from starting to crashed
2021-06-11T06:39:21.946361+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=taskmatealex.herokuapp.com request_id=03769758-3201-4ace-84d7-eff640f19e64 fwd="103.70.154.90" dyno= connect= service= status=503 bytes= protocol=https
2021-06-11T06:39:22.615862+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=taskmatealex.herokuapp.com request_id=a3bb074c-e730-47e5-a8d8-3a56a654d536 fwd="103.70.154.90" dyno= connect= service= status=503 bytes= protocol=https
2021-06-11T06:44:11.320345+00:00 app[api]: Set DJANGO_SECRET_KEY config vars by user a
2021-06-11T06:44:11.320345+00:00 app[api]: Release v7 created by user a
2021-06-11T06:44:11.681506+00:00 heroku[web.1]: State changed from crashed to starting
2021-06-11T06:44:16.640737+00:00 heroku[web.1]: Starting process with command `: gunicorn taskmate.wsgi`
2021-06-11T06:44:20.185781+00:00 heroku[web.1]: Process exited with status 0
2021-06-11T06:44:20.627488+00:00 heroku[web.1]: State changed from starting to crashed
2021-06-11T06:44:45.899230+00:00 app[api]: Set DJANGO_DEBUG config vars by user a
2021-06-11T06:44:45.899230+00:00 app[api]: Release v8 created by user a
2021-06-11T06:44:46.186652+00:00 heroku[web.1]: State changed from crashed to starting
2021-06-11T06:44:51.580724+00:00 heroku[web.1]: Starting process with command `: gunicorn taskmate.wsgi`
2021-06-11T06:44:53.930104+00:00 heroku[web.1]: Process exited with status 0
2021-06-11T06:44:53.996520+00:00 heroku[web.1]: State changed from starting to crashed
2021-06-11T06:45:49.132605+00:00 app[api]: Set DJANGO_ALLOWED_HOSTS config vars by user a
2021-06-11T06:45:49.132605+00:00 app[api]: Release v9 created by user a
2021-06-11T06:45:50.149885+00:00 heroku[web.1]: State changed from crashed to starting
2021-06-11T06:45:55.131936+00:00 heroku[web.1]: Starting process with command `: gunicorn taskmate.wsgi`
2021-06-11T06:45:57.900136+00:00 heroku[web.1]: Process exited with status 0
2021-06-11T06:45:57.975963+00:00 heroku[web.1]: State changed from starting to crashed
2021-06-11T06:46:16.613566+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=taskmatealex.herokuapp.com request_id=75595574-8bfd-4851-92a7-667346862310 fwd="103.70.154.90" dyno= connect= service= status=503 bytes= protocol=https
2021-06-11T06:46:17.030878+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=taskmatealex.herokuapp.com request_id=88926793-6033-41cb-8b5b-5d80d227ec44 fwd="103.70.154.90" dyno= connect= service= status=503 bytes= protocol=https
2021-06-11T06:46:48.270024+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=taskmatealex.herokuapp.com request_id=caba852e-9548-4020-a230-d59a94770034 fwd="103.70.154.90" dyno= connect= service= status=503 bytes= protocol=https
2021-06-11T06:46:48.896248+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=taskmatealex.herokuapp.com request_id=fa079ddf-ba6d-4b0a-8bb7-44171a2e89f0 fwd="103.70.154.90" dyno= connect= service= status=503 bytes= protocol=https
2021-06-11T06:52:16.814200+00:00 heroku[web.1]: State changed from crashed to starting
2021-06-11T06:52:22.174366+00:00 heroku[web.1]: Starting process with command `: gunicorn taskmate.wsgi`
2021-06-11T06:52:26.162459+00:00 heroku[web.1]: Process exited with status 0
2021-06-11T06:52:26.256358+00:00 heroku[web.1]: State changed from starting to crashed

can you please help me , I am a beginner

Source: Python Questions

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