updated demo

app.py

@@ -156,7 +156,7 @@ def respond(
 # Gradio app configuration
 demo = gr.ChatInterface(
     fn=respond,
-    chatbot="Assistant",
+    chatbot=gr.Chatbot(label="Assistant"),  # Use a Gradio Chatbot component
     additional_inputs=[
         gr.Textbox(value="You are a friendly Chatbot.", label="System message"),
         gr.Slider(minimum=1, maximum=2048, value=512, step=1, label="Max new tokens"),
@@ -171,5 +171,6 @@ demo = gr.ChatInterface(
     ],
 )
 
+
 if __name__ == "__main__":
     demo.launch()