Update app.py

app.py

@@ -1,7 +1,11 @@
 import gradio as gr
 # import lines go at the top! Any libraries I need to import go up ^
 
-chatbot = gr.ChatInterface()
+#always need two parameters in hf
+def echo(message, history)
+    return message
+    
+chatbot = gr.ChatInterface(echo)
 # declaring chatbot so that user can interact and see their conversation history and send new messages
 
 chatbot.launch()