guicorn istalled in venv and deployed on heroku though showing bash: gunicorn:command not found #4913

Issue Description

guicorn istalled in venv and deployed on heroku though showing bash: gunicorn:command not found.
using git push heroku master

pip install

pip install gunicorn

Environment Setup

Django application running in virtual enviornment and all necessary modules are included in requirements.txt including gunicorn==19.9.0

• Server
  • Operating System: running on windows 10
  • Localhost or remote server: heroku

Logs/Trace

2018-07-26T21:39:24.091417+00:00 app[web.1]: bash: gunicorn: command not found
2018-07-26T21:39:24.144434+00:00 heroku[web.1]: Process exited with status 127
2018-07-26T21:39:36.719603+00:00 heroku[web.1]: Starting process with command g unicorn django_project.wsgi
2018-07-26T21:39:39.790623+00:00 heroku[web.1]: State changed from starting to c rashed
2018-07-26T21:39:39.774764+00:00 heroku[web.1]: Process exited with status 127
2018-07-26T21:39:39.701533+00:00 app[web.1]: bash: gunicorn: command not found
2018-07-26T21:40:28.002903+00:00 heroku[router]: at=error code=H10 desc="App cra shed" method=GET path="/" host=code-beta.herokuapp.com request_id=92f9104d-d9af- 4633-bcd6-7c8c2344b9a5 fwd="77.111.245.10" dyno= connect= service= status=503 by tes= protocol=https
2018-07-26T21:40:28.979415+00:00 heroku[router]: at=error code=H10 desc="App cra shed" method=GET path="/favicon.ico" host=code-beta.herokuapp.com request_id=756 d0454-8244-4c5f-9034-8eaefca9ce60 fwd="77.111.245.10" dyno= connect= service= st atus=503 bytes= protocol=https