Fixes: 1) Handle missing DigitalAssetDownload instance in download_url method with explicit conditional logic;

Extra: 1) Simplify exception handling by replacing it with clear branch logic.

core/models.py

@@ -1784,9 +1784,9 @@ class OrderProduct(ExportModelOperationsMixin("order_product"), NiceModel):  # t
     def download_url(self: Self) -> str:
         if self.product and self.product.stocks:
             if self.product.is_digital and self.product.stocks.first().digital_asset:  # type: ignore [union-attr]
-                try:
+                if self.download:
                     return self.download.url
-                except DigitalAssetDownload.RelatedObjectDoesNotExist:
+                else:
                     return DigitalAssetDownload.objects.create(order_product=self).url
         return ""