Update app.py

app.py

@@ -1609,7 +1609,7 @@ with gr.Blocks(theme=theme) as app:
                                 choices=get_indexes(),
                                 value=get_index(),
                                 interactive=True,
-                                visible=false
+                                visible=False
                                 )
                             sid0.change(fn=match_index, inputs=[sid0],outputs=[file_index1])
                             refresh_button.click(