Update app.py

app.py

@@ -115,7 +115,7 @@ def chatbot(input_text, history=conversation_history):
     history.append((input_text, response.response))
     
  # return the response and updated conversation history
-    return response.response, history
+    return [(input_text, response.response)], history
 
 with open('about.txt', 'r') as file:
     about = file.read()