old_contents: from django.conf.urls import url
  
  from simple_autocomplete.views import get_json
  
  
  urlpatterns = [
      url(r'^(?P<token>[\w-]+)/$', get_json, name='simple-autocomplete')
  ]
  
new_contents: from django.conf.urls import url
  
  from simple_autocomplete.views import get_json
  
  
  app_name = "simple_autocomplete"
  urlpatterns = [
      url(r'^(?P<token>[\w-]+)/$', get_json, name='simple-autocomplete')
  ]
  
subject: Add app_name