title: Django can' t load Module 'debug_toolbar': No module named 'debug_toolbar'
body: <p>When I try running the project, Django can not load the django-debug-toolbar plugin for some reason. Error message says:</p>
  
  <pre><code>web_1  | ModuleNotFoundError: No module named 'debug_toolbar'
  </code></pre>
  
  <p>Here is my settings.py</p>
  
  <pre><code>INSTALLED_APPS = [
      # ...
      'django.contrib.staticfiles',
      # ...
      'debug_toolbar',
  ]
  
  MIDDLEWARE = [
      # ...
      'debug_toolbar.middleware.DebugToolbarMiddleware',
      # ...
  ]
  
  INTERNAL_IPS = ('127.0.0.1', '192.168.0.1',)
  </code></pre>