Set type as - to messages

app.py

@@ -4,8 +4,9 @@ import gradio as gr
 def echo(message, history):
     return message
 #a function that the user's message is repeated back to you
-    
-chatbot = gr.ChatInterface(echo)
+
+print("Hello World")
+chatbot = gr.ChatInterface(echo, type="messdages")
 #defining my chatbot so that the user can interact and see their conversation history and send me messages
 
 chatbot.launch()