Update app.py

app.py

@@ -28,18 +28,18 @@ with gr.Blocks(theme=gr.themes.Soft()) as demo:
     chatbot = gr.Chatbot()
     msg = gr.Textbox()
     btn = gr.Button("Submit", variant="primary")
-    # gr.ClearButton([msg, chatbot])
     clear = gr.Button("Clear")
-   
+    
     def user(user_message, history):
-        return gr.update(value=""), history + [[user_message, None]]
+        history.append([user_message, None])
+        return gr.update(value=""), history
     
     def bot(history):
-        try:        
+        try:
             bot_message = palm.chat(
                 context=context,
                 examples=examples,
-                messages=history[-1][0]
+                messages=[h[0] for h in history]
             )
             
             history[-1][1] = ""