fix: added handling missing suggested campaign

solution/services/backend/api/v1/ads/views.py

@@ -1,7 +1,7 @@
 from http import HTTPStatus as status
 from uuid import UUID
 
-from django.http import HttpRequest
+from django.http import HttpRequest, Http404
 from django.shortcuts import get_object_or_404
 from ninja import Router
 
@@ -28,6 +28,9 @@ def get_advertisment(
 
     campaign = Campaign.suggest(client)
 
+    if not campaign:
+        raise Http404
+
     campaign.view(client)
 
     return status.OK, campaign