fix

app.py

@@ -74,7 +74,7 @@ print("Mounting app...");
 GradioApp = gr.mount_gradio_app(app, demo, path="/", ssr_mode=False); 
 
 
-app2.close();
+demo.close();
 
 if __name__ == '__main__':
     print("Running uviconr...");