add the collector urls to the project urls

sensors/sensors/urls.py

@@ -14,6 +14,8 @@ Including another URLconf
     2. Add a URL to urlpatterns:  path('blog/', include('blog.urls'))
 """
 from django.urls import path
+from django.conf.urls import include, url
 
 urlpatterns = [
+    url(r'', include('collector.urls')),
 ]