UPDATE

config/test_urls.py

@@ -1,5 +1,5 @@
 from django.http import HttpResponse
-from django.urls import path
+from django.urls import include, path
 
 
 def test_view(_request):
@@ -8,4 +8,5 @@ def test_view(_request):
 
 urlpatterns = [
     path("__test__/", test_view),
+    path("api/rag/", include("rag.urls")),
 ]