Update app.py

app.py

@@ -2,7 +2,9 @@ import gradio as gr
 
 def echo(message, history):
     return message
-    
-chatbot = gr.ChatInterface(echo) #chatbot UI - conversation history and user input
+
+print("hello, world!")
+
+chatbot = gr.ChatInterface(echo, type="messages") #chatbot UI - conversation history and user input
 
 chatbot.launch()