docs: def handler500(request):
      """
      500 error handler.
  
      Templates: `500.html`
      Context: None
      """
      from django.template import Context, loader
      from django.http import HttpResponseServerError
      from overseer.context_processors import default
      import logging
      import sys
      try:
          context = default(request)
      except Exception, e:
          logging.error(e, exc_info=sys.exc_info(), extra={'request': request})
          context = {}
      
      context['request'] = request
      
      t = loader.get_template('500.html') # You need to create a 500.html template.
      return HttpResponseServerError(t.render(Context(context)))