Improve registration of data import serializers

src/backend/InvenTree/importer/registry.py

@@ -19,14 +19,14 @@ class DataImportSerializerRegister:
     def register(self, serializer) -> None:
         """Register a new serializer with the importer registry."""
         if not issubclass(serializer, DataImportSerializerMixin):
-            logger.debug('Invalid serializer class: %s', type(serializer))
+            logger.debug('Invalid serializer class: %s', serializer.__name__)
             return
 
         if not issubclass(serializer, Serializer):
-            logger.debug('Invalid serializer class: %s', type(serializer))
+            logger.debug('Invalid serializer class: %s', serializer.__name__)
             return
 
-        logger.debug('Registering serializer class for import: %s', type(serializer))
+        logger.debug('Registering serializer class for import: %s', serializer.__name__)
 
         if serializer not in self.supported_serializers:
             self.supported_serializers.append(serializer)

src/backend/InvenTree/order/serializers.py

@@ -1297,7 +1297,10 @@ class SalesOrderLineItemSerializer(
 
 @register_importer()
 class SalesOrderShipmentSerializer(
-    FilterableSerializerMixin, NotesFieldMixin, InvenTreeModelSerializer
+    DataImportExportSerializerMixin,
+    FilterableSerializerMixin,
+    NotesFieldMixin,
+    InvenTreeModelSerializer,
 ):
     """Serializer for the SalesOrderShipment class."""