Update app.py

app.py

@@ -32,13 +32,13 @@ with gr.Blocks() as demo:
     clear = gr.ClearButton([msg, chatbot])
 
     def user(user_message, history):
-        return gr.update(value="", interactive=False), history + [[user_message, None]]
+        return gr.update(value="", interactive=False), history + [[user_message, ""]]
     def bot(user_message,history):
         # chat_history.append(message)  # Initialize chat history
         bot_message = palm.chat(
             context=context,
             examples=examples,
-            messages=history[0][0]
+            messages=history
         )
         history[-1][1] = ""
         for character in bot_message: