title: Django Error Module 'Whitenoise' not found
body: <p>I'm using whitenoise to deploy static files in prod, so according to whitenoise's docs, it's recommended to use it in development too.</p>
  
  <p>So I followed the documentation and added the following to my <code>settings.py</code> file:</p>
  
  <pre><code>INSTALLED_APPS = [
      'whitenoise.runserver_nostatic',
      'django.contrib.admin',
      ...other
  ]
  
  MIDDLEWARE = [
      'django.middleware.security.SecurityMiddleware',
      'whitenoise.middleware.WhiteNoiseMiddleware',
      ...other
  ]
  </code></pre>
  
  <p>But when I run the server using <code>python manage.py runserver 0.0.0.0:8000</code>, I get the error </p>
  
  <blockquote>
    <p>ModuleNotFoundError: No module named 'whitenoise'</p>
  </blockquote>
  
  <p>Full stack trace:</p>
  
  <pre><code>Exception in thread django-main-thread:
  Traceback (most recent call last):
    File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 926, in _bootstrap_inner
      self.run()
    File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 870, in run
      self._target(*self._args, **self._kwargs)
    File "/path/to/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
      fn(*args, **kwargs)
    File "/path/to/venv/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 109, in inner_run
      autoreload.raise_last_exception()
    File "/path/to/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 76, in raise_last_exception
      raise _exception[1]
    File "/path/to/venv/lib/python3.7/site-packages/django/core/management/__init__.py", line 357, in execute
      autoreload.check_errors(django.setup)()
    File "/path/to/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
      fn(*args, **kwargs)
    File "/path/to/venv/lib/python3.7/site-packages/django/__init__.py", line 24, in setup
      apps.populate(settings.INSTALLED_APPS)
    File "/path/to/venv/lib/python3.7/site-packages/django/apps/registry.py", line 91, in populate
      app_config = AppConfig.create(entry)
    File "/path/to/venv/lib/python3.7/site-packages/django/apps/config.py", line 116, in create
      mod = import_module(mod_path)
    File "/usr/local/Cellar/python/3.7.6_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
      return _bootstrap._gcd_import(name[level:], package, level)
    File "&lt;frozen importlib._bootstrap&gt;", line 1006, in _gcd_import
    File "&lt;frozen importlib._bootstrap&gt;", line 983, in _find_and_load
    File "&lt;frozen importlib._bootstrap&gt;", line 965, in _find_and_load_unlocked
  ModuleNotFoundError: No module named 'whitenoise'
  </code></pre>
  
  <p>I checked using <code>pip freeze</code> and the module IS installed (v5.0.1) along with django 3.0.4.  So why am I getting that error?</p>