title: Python/Django crash on gunicorn on Heroku
body: <p>I've deployed my app to Heroku and am getting the following error in the logs upon loading the page:</p>
  
  <pre><code>2016-12-09T22:47:56.020392+00:00 heroku[slug-compiler]: Slug compilation started
  2016-12-09T22:47:56.020401+00:00 heroku[slug-compiler]: Slug compilation finished
  2016-12-09T22:47:56.001478+00:00 heroku[web.1]: State changed from crashed to starting
  2016-12-09T22:48:00.770182+00:00 heroku[web.1]: Starting process with command `gunicorn surfspots.wsgi --log-file -`
  2016-12-09T22:48:03.282956+00:00 heroku[web.1]: Process exited with status 127
  2016-12-09T22:48:03.180446+00:00 app[web.1]: bash: gunicorn: command not found
  2016-12-09T22:48:03.300446+00:00 heroku[web.1]: State changed from starting to crashed
  </code></pre>
  
  <p>I am running Python 3.5.2:</p>
  
  <pre><code>$ cat runtime.txt 
  python-3.5.2
  </code></pre>
  
  <p>The name of my Django project is 'surfspots':</p>
  
  <pre><code>$ cat Procfile 
  web: gunicorn surfspots.wsgi --log-file -
  </code></pre>
  
  <p>For <a href="https://stackoverflow.com/questions/41039158/django-heroku-crash-on-deploy-run?newreg=9f69c49c839841f7aec1ca566bed3b4">this person</a>, they received the same issue and solved it because they had not installed gunicorn.</p>
  
  <p>However, I do have gunicorn installed in my requirements.txt, using "pip install gunicorn"</p>
  
  <p>Here is my requirements.txt file:</p>
  
  <pre><code>$ cat requirements.txt
  boto==2.43.0
  click==6.6
  click-plugins==1.0.3
  cligj==0.4.0
  descartes==1.0.2
  dj-database-url==0.4.1
  Django==1.10.4
  django-bootstrap3==7.1.0
  django-geojson==2.9.1
  django-leaflet==0.19.0
  django-storages==1.5.1
  django-tables2==1.2.6
  django-widget-tweaks==1.4.1
  Fiona==1.7.1
  GeoAlchemy2==0.4.0
  gunicorn==19.6.0
  jsonfield==1.0.3
  munch==2.0.4
  numpy==1.11.2
  pandas==0.19.1
  psycopg2==2.6.2
  pyproj==1.9.5.1
  python-dateutil==2.6.0
  pytz==2016.7
  requests==2.12.3
  six==1.10.0
  SQLAlchemy==1.1.4
  </code></pre>
  
  <p>This is the directory structure for my Django project:</p>
  
  <pre><code>$ tree . -L 2
  .
  ├── locations
  │   ├── admin.py
  │   ├── apps.py
  │   ├── data
  │   ├── __init__.py
  │   ├── migrations
  │   ├── models.py
  │   ├── __pycache__
  │   ├── static
  │   ├── templates
  │   ├── tests.py
  │   └── views.py
  ├── manage.py
  ├── Procfile
  ├── README.md
  ├── requirements.txt
  ├── runtime.txt
  ├── surfspots
  │   ├── __init__.py
  │   ├── __pycache__
  │   ├── settings.py
  │   ├── urls.py
  │   └── wsgi.py
  └── venv
      ├── bin
      ├── include
      ├── lib
      └── pip-selfcheck.json
  </code></pre>
  
  <p>Any tips? Thank you!</p>