Update app.py

app.py

@@ -28,6 +28,12 @@ with gr.Blocks(theme=gr.themes.purple(
     color_accent_soft_dark='*secondary_400',
     button_primary_background_fill='*secondary_500',
     button_primary_background_fill_dark='*secondary_600'
-))
+)) as demo:
+    chatbot = gr.ChatInterface(
+        fn=magic_8_ball,
+        title="Magic 8 Ball",
+        description="Let's play magic 8 ball!",
+        type="messages"
+    )
 
 chatbot.launch()