title: Can't start worker, No module named 'celery
body: <p>I try to include tasks in my webapplication but i can't start the celery work.</p>
  
  <p>My project structure is the following:</p>
  
  <blockquote>
    <p>website/website --> init.py, settings.py, urls.py, wsgi.py</p>
    
    <p>website/index --> init.py, celery_app.py, tasks.py</p>
  </blockquote>
  
  <p><strong>Index</strong> is my startpage where i want to run the tasks.</p>
  
  <p><strong>index/celery_app.py</strong> has the following code:</p>
  
  <pre><code>from __future__ import absolute_import, unicode_literals
  from celery import Celery
  
  app = Celery('index',
           broker='amqp://localhost//',
           backend='amqp://',
           include=['index.tasks'])
  
   # Optional configuration, see the application user guide.
   app.conf.update(
      result_expires=3600,
     )
  
  if __name__ == '__main__':
  app.start()
  </code></pre>
  
  <p><strong>index/tasks.py</strong>:</p>
  
  <pre><code>from __future__ import  absolute_import
  from .celery_app import app
  
  @app.task
  def test_func():
      print("Test Background Task")
  </code></pre>
  
  <p>When i want to start the worker with <em>celery -A index worker --loglevel=info</em> I get the following error: ModuleNotFoundError: No module named 'celery'.
  I run the commandprompt in the index folder.</p>
  
  <p>The other solutions in similar questions didn't help me.</p>
  
  <p>Screenshot of my Packages: <a href="https://i.stack.imgur.com/TYbUi.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TYbUi.png" alt="Installed packages"></a></p>