Update app.py

app.py

@@ -1,7 +1,10 @@
 import gradio as gr
 
-def echo(messsage,history):
-    return messsage
-    
-chatbot=gr.ChatInterface(echo)
+def echo(message, history):
+	return message
+
+print("Hello, world!")
+
+chatbot = gr.ChatInterface(echo, type="messages")
+
 chatbot.launch()