FIX: typing

app.py

@@ -67,7 +67,7 @@ def get_evaluation_data_from_json(_context: List) -> List[Tuple[List, str, str]]
     return output_data
 
 
-def get_evaluation_data_from_dialogue(_context: List) -> List[Tuple[List, str, Union[str | None]]]:
+def get_evaluation_data_from_dialogue(_context: List) -> List[Tuple[List, str, Union[str, None]]]:
     output_data = []
     for idx, _line in enumerate(_context):
         if idx == 0: