small fix

handler.py

@@ -195,7 +195,7 @@ class Transcript:
         sorted_uptake_dict_list = sorted(uptake_dict_list, key=lambda x: x['value'], reverse=True)
         sorted_teacher_dict_list = sorted(teacher_dict_list, key=lambda x: x['value'], reverse=True)
         sorted_student_dict_list = sorted(student_dict_list, key=lambda x: x['value'], reverse=True)
-        return sorted_dict_list[:50], sorted_uptake_dict_list[:50], sorted_teacher_dict_list, sorted_student_dict_list
+        return sorted_dict_list[:50], sorted_uptake_dict_list[:50], sorted_teacher_dict_list[:50], sorted_student_dict_list[:50]
 
     def get_talk_timeline(self):
         return [utterance.to_talk_timeline_dict() for utterance in self.utterances]