Update app.py

app.py

@@ -152,8 +152,7 @@ def respond(query, history, chapter, candidates, story_ep, chat_ep, token, immer
                 history.append([
                         None, f"{content['is_end']}"
                     ])
-                yield history
-                break
+                return "", history
             next_bot_names=content['next_bot_names']
             next_bot_names=[bot_name for bot_name in content['next_bot_names'] if bot_name.replace(' ', "") in assistants]
         else: