I Have Installed Gunicorn But Its Showing Some Error Plz Find It Out and Post Solution

[sasi-bit]

S:\commerce>heroku logs --tail
2021-05-21T10:25:33.854236+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T10:25:43.278367+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T10:25:43.400110+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T10:25:43.568812+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T14:59:02.000000+00:00 app[api]: Build started by user [e-mail]
2021-05-21T14:59:24.997986+00:00 app[api]: Deploy 87eb2006 by user [e-mail]
2021-05-21T14:59:24.997986+00:00 app[api]: Release v7 created by user [e-mail]
2021-05-21T14:59:25.349888+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T14:59:29.813084+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T14:59:32.842749+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T14:59:32.923810+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T14:59:33.030602+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T14:59:33.034357+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T14:59:34.000000+00:00 app[api]: Build succeeded
2021-05-21T14:59:37.919248+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T14:59:41.312865+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T14:59:41.391741+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T14:59:41.491046+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T14:59:42.648833+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=8e722e31-cb06-464b-97e5-93ee64ca52cc fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-21T14:59:43.208695+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=a5875b3e-c7e1-475a-938b-f5d919302466 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-21T15:00:34.201010+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=e4e5f718-dace-4847-b085-94339c7eb82b fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-21T15:00:34.827530+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=7069f835-7bcd-40d6-a5df-5ef5a5e34582 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-21T15:01:40.000000+00:00 app[api]: Build started by user [e-mail]
2021-05-21T15:02:05.253735+00:00 app[api]: Release v8 created by user [e-mail]
2021-05-21T15:02:05.253735+00:00 app[api]: Deploy 87eb2006 by user [e-mail]
2021-05-21T15:02:05.438977+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T15:02:10.088252+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T15:02:13.100323+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T15:02:13.190085+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T15:02:13.366886+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T15:02:14.000000+00:00 app[api]: Build succeeded
2021-05-21T15:34:38.235308+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T15:34:43.645897+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T15:34:46.562729+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T15:34:46.630797+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T15:34:46.705090+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T16:09:40.437215+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T16:09:53.229477+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T16:09:56.821716+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T16:09:56.909758+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T16:09:56.984049+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T18:24:09.112524+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T18:24:14.513553+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T18:24:17.696856+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T18:24:17.792055+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T18:24:17.869655+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-21T19:59:29.196894+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-21T19:59:32.136817+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-21T19:59:33.828326+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-21T19:59:33.877650+00:00 heroku[web.1]: Process exited with status 127
2021-05-21T19:59:33.958390+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T00:25:43.869433+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-22T00:25:49.367136+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-22T00:25:52.360554+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-22T00:25:52.424048+00:00 heroku[web.1]: Process exited with status 127
2021-05-22T00:25:52.548787+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T06:03:24.267479+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-22T06:03:28.326226+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-22T06:03:31.170471+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-22T06:03:31.251712+00:00 heroku[web.1]: Process exited with status 127
2021-05-22T06:03:31.456429+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T07:12:54.505729+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=3072caa4-2143-4137-b990-12899e9e2b05 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:12:55.079867+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=19088975-e6d6-4457-890c-948805d36cc3 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:20:31.000000+00:00 app[api]: Build started by user [e-mail]
2021-05-22T07:21:00.504183+00:00 app[api]: Release v9 created by user [e-mail]
2021-05-22T07:21:00.504183+00:00 app[api]: Deploy 87eb2006 by user [e-mail]
2021-05-22T07:21:00.836631+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-22T07:21:04.825065+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-22T07:21:07.166802+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-22T07:21:07.238336+00:00 heroku[web.1]: Process exited with status 127
2021-05-22T07:21:07.338367+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T07:21:07.360178+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-22T07:21:10.000000+00:00 app[api]: Build succeeded
2021-05-22T07:21:11.512367+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-22T07:21:14.460668+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-22T07:21:14.540569+00:00 heroku[web.1]: Process exited with status 127
2021-05-22T07:21:14.744414+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T07:21:15.998892+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=d1c95eb6-6c18-444c-8cfd-79d344d89c8a fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:21:16.258829+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=47cab50b-ddc8-4d67-bf56-e7d84c0d6cc2 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:21:16.713176+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=9d0be5d4-cd73-4dfb-89bb-deb66cc0a969 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:21:16.899686+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=cf7f64d4-0d33-4ad5-9a73-7fc561ff79b9 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:21:17.629707+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=d7a7312d-0e66-463c-8af7-8c4e699d6c5a fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:32:04.776579+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=9ebb763c-8edb-4fea-9010-ceb53db2f67d fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:32:05.170222+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=e5fc2099-5731-4730-9ee2-b95ca3e527a5 fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:32:17.000000+00:00 app[api]: Build started by user [e-mail]
2021-05-22T07:32:41.848768+00:00 app[api]: Deploy 87eb2006 by user [e-mail]
2021-05-22T07:32:41.848768+00:00 app[api]: Release v10 created by user [e-mail]
2021-05-22T07:32:42.646383+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-22T07:32:46.949677+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-22T07:32:50.072152+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-22T07:32:50.138472+00:00 heroku[web.1]: Process exited with status 127
2021-05-22T07:32:50.216410+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T07:32:50.254439+00:00 heroku[web.1]: State changed from crashed to starting
2021-05-22T07:32:51.000000+00:00 app[api]: Build succeeded
2021-05-22T07:32:54.182458+00:00 heroku[web.1]: Starting process with command gunicorn commerce.wsgi
2021-05-22T07:32:56.681707+00:00 app[web.1]: bash: gunicorn: command not found
2021-05-22T07:32:56.810841+00:00 heroku[web.1]: Process exited with status 127
2021-05-22T07:32:56.914316+00:00 heroku[web.1]: State changed from starting to crashed
2021-05-22T07:32:58.372907+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/" host=bidnow.herokuapp.com request_id=02ed5ffe-40e4-489f-8cb3-f06303b8a65f fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https
2021-05-22T07:32:58.802069+00:00 heroku[router]: at=error code=H10 desc="App crashed" method=GET path="/favicon.ico" host=bidnow.herokuapp.com request_id=b93d44b7-ca58-46cf-a0bd-5b1706442bee fwd="183.82.159.32" dyno= connect= service= status=503 bytes= protocol=https