streamname has to exist on Form before the parent ctor is called

airbyte-integrations/connectors/source-commcare/source_commcare/source.py

@@ -229,10 +229,10 @@ class Form(IncrementalStream):
     primary_key = "id"
 
     def __init__(self, start_date, app_id, name, xmlns, schema, **kwargs):
+        self.streamname = name
         super().__init__(**kwargs)
         self.app_id = app_id
         self._cursor_value = parse_datetime_with_microseconds(start_date)
-        self.streamname = name
         self.xmlns = xmlns
         self.schema = schema