Update app.py

app.py

@@ -86,7 +86,7 @@ else:
     app_examples = None
 
 demo = gr.ChatInterface(respond, description = cfg.description, css = css,
-                        chatbot = gr.Chatbot(layout = "panel", value = [[None, "How may I help you?"]]), examples = app_examples, cache_examples = False)
+                        chatbot = gr.Chatbot(value = [[None, "How may I help you?"]]), examples = app_examples, cache_examples = False)
 
 if __name__ == "__main__":
     demo.launch()