docs: def server_error(request, template_name='500.html'):
      """
      500 error handler.
      Templates: `500.html`
      Context:
      STATIC_URL
        Path of static media (e.g. "media.example.org")
      """
      t = loader.get_template(template_name)
      return HttpResponseServerError(
          t.render(Context({'STATIC_URL': settings.STATIC_URL})))