title: Server error 500 Wagtail-admin
body: <p>Currently I'm deploying a Wagtail project. It seems everything working fine so far but there is one issue I can't get rid of. When I'm trying to access the Wagtail admin url I get an internal server error since I changed my <code>settings</code> file <code>DEBUG</code> to <code>False</code>. That's not the case when I access django-admin. Generally the whole Site is working fine without errors. 
  I found this <a href="https://stackoverflow.com/questions/26810855/wagtail-deployment-issue-keyerror-request-on-admin">post</a>. But my 500.html template is not extending base.html and I'm also not using Compress. 
  Any Ideas how I could solve this?</p>