Fixed the function to update

app.py

@@ -184,8 +184,9 @@ h1#title {
 demo = gr.Blocks(css=css)
 
 
-def changing(inVal, outBox):
-    return gr.Button('Detect', interactive=True), gr.Button('Detect', interactive=True)
+def changing():
+    # https://discuss.huggingface.co/t/how-to-programmatically-enable-or-disable-components/52350/4
+    return gr.Button.update(interactive=True), gr.Button.update(interactive=True)