update

backEnd/contact/urls.py

@@ -0,0 +1,12 @@
+from django.urls import path, include
+from rest_framework.routers import DefaultRouter
+from .views import ContactSubmissionViewSet
+
+# Create a router and register our viewsets
+router = DefaultRouter()
+router.register(r'submissions', ContactSubmissionViewSet, basename='contact-submission')
+
+# The API URLs are now determined automatically by the router
+urlpatterns = [
+    path('', include(router.urls)),
+]