title: Configuring django-userena
body: <p>for my new project I decided to use <a href="https://django-userena.org/" rel="noreferrer">django-userena</a></p>
  <p>I followed the instructions from <a href="http://docs.django-userena.org/en/latest/installation.html" rel="noreferrer">userena docs</a>. However I'm getting this error :</p>
  <blockquote>
  <p>SiteProfileNotAvailable at /accounts/signin/</p>
  <p>No exception supplied</p>
  </blockquote>
  <p>and don't know how to fix it. Please help !</p>