fix copy metadata

operators/operators.py

@@ -73,10 +73,10 @@ class VSETB_OT_copy_metadata(Operator):
         settings = get_scene_settings()
         project = settings.active_project
 
-        metadata = next(k for k, v in project.metadata_types.items() if v.name == self.metadata)
-
-        print('VSETB_OT_copy_metadata', self.metadata, metadata)
+        metadata = next((m.field_name for m in project.metadata_types if m.name == self.metadata), None)
 
+        if not metadata:
+            self.report({'ERROR'}, f'No Metadata named {self.metadata}')
 
         active_strip = context.active_sequence_strip
         metadata_value = getattr(active_strip.vsetb_strip_settings.metadata, metadata)