Don't Error 500 when using other member's Order PK etc

src/accounting/views.py

@@ -102,7 +102,7 @@ def success(request: HttpRequest, order_id: int) -> HttpResponse:
     quickly as possible.
     """
     user = request.user  # People just need to login to pay something, not necessarily be a member
-    order = models.Order.objects.get(pk=order_id, member=user)
+    order = get_object_or_404(models.Order, pk=order_id, member=user)
 
     context = {
         "order": order,