title: Error import for xstatic.pkg.angular_cookies when running manage.py
body: <p>I try to install AVOS in openstack on my ubuntu server. But when i try to execute </p>
  
  <blockquote>
    <p>python manage.py runserver</p>
  </blockquote>
  
  <p>it turns on that error import for <code>xstatic.pkg.angular_cookies</code>. It seems that no one has a similar problem to me. What can I do to fix this?</p>
  
  <p>Here's the application from <a href="https://github.com/CiscoSystems/avos" rel="nofollow">CiscoSystems@GitHub</a></p>