Getting Windows but return empty HashMap.

[Walker-00]

I'm trying to make a program that hide frontend desktop when the event send Close or Exit request and show back when user click tray icon. But when I debug printed the label of window it's empty and I've even tried to use .windows() but it just show empty hashmap.

Code:

.system_tray(tray).on_system_tray_event(|app, event| {
            if let tauri::SystemTrayEvent::MenuItemClick {id, .. } = event {
                    if let "show" = id.as_str() {
                                app.get_window("main").unwrap().show().unwrap();
            eprintln!("ppppppp");
                    }
                }
        }).on_window_event(|event| {
            if let CloseRequested { api, .. } = event.event() {
                event.window().hide().unwrap();
                api.prevent_close();
            eprintln!("ccccccc");
            }
        }).build(tauri::generate_context!()).expect("error while running tauri application");

    app.run(|app_handle, e| match e {
        tauri::RunEvent::ExitRequested { api, .. } => {
            let app_handle = app_handle.clone();
            let p = app_handle.windows();
            println!("{:?}", p);
            api.prevent_exit();
            eprintln!("eeeeeee");
        },
        tauri::RunEvent::WindowEvent { label, event: CloseRequested { api, .. }, .. } => {
            let app_handle = app_handle.clone();
            app_handle.get_window(&label).unwrap().hide().unwrap();
            api.prevent_close();
            let mut win_label = WIN_LABEL.lock().unwrap();
            *win_label = label.clone();
            eprintln!("dddddd: {}", label);
        }
        _ => {},
    });

[Walker-00]

and also the app.get_window("main") return None.