some changes

src/documents/consumer.py

@@ -216,7 +216,7 @@ class Consumer(LoggingMixin):
             self.log(
                 "error",
                 f"Error while consuming document {self.filename}: {e}")
-            self._fail(e)
+            self._fail(str(e))
 
         # Prepare the document classifier.
 

src/documents/views.py

@@ -211,7 +211,7 @@ class DocumentViewSet(RetrieveModelMixin,
 
         parser_class = get_parser_class_for_mime_type(mime_type)
         if parser_class:
-            parser = parser_class(logging_group=None)
+            parser = parser_class(progress_callback=None, logging_group=None)
 
             try:
                 return parser.extract_metadata(file, mime_type)