Background mode not work in ionic 5

this.backgroundMode.enable();

  this.backgroundMode.on('activate').subscribe(()=>{

    this.backgroundMode.disableBatteryOptimizations();

    this.backgroundMode.disableWebViewOptimizations();

    this.backgroundMode.moveToBackground();

    setInterval(()=>{

      this.nativeAudio.preloadSimple('uniqueId1', 'assets/audio/custom_sound2.mp3');

      this.dashboardService.getTodayOrders().then((data:any)=>{

        if (data.result == "success") {

          if (data.data.find( o => o.orderStatus == "1") != undefined) {

              this.localNotifications.schedule( {

                id: 1,

                text: 'New Order is Arrival',

                sound: 'file://audio/custom_sound2.mp3',

                icon: 'https://image.flaticon.com/icons/svg/1205/1205747.svg',

              });   

            this.nativeAudio.play('uniqueId1');

            this.backgroundMode.enable();

          }

        } 

      },error=>{

        console.log(error);

        this.backgroundMode.enable();

      });

      this.backgroundMode.enable();

    },120000);

  },error=>{});