onesignal alert notification force close after open notification in ios - ios

Question

after open the notification from notification center, the application running only splash screen and force close after splash screen. my application in android is normal open the alert. my ios version 12.2. my code is here:
initializeApp()
{
this.platform.ready().then(() => {
if (this.platform.is('cordova'))
{
this.oneSignal.startInit('xxxxxxxxxxxxxxxxxxx', 'xxxxxxxxxxx');
this.oneSignal.inFocusDisplaying(this.oneSignal.OSInFocusDisplayOption.Notification);
this.oneSignal.handleNotificationReceived().subscribe(data => this.onPushReceived(data.payload));
this.oneSignal.handleNotificationOpened().subscribe(data => this.onPushOpened(data.notification.payload));
this.oneSignal.endInit();
}
this.statusBar.styleDefault();
this.splashScreen.hide();
});
}
private onPushOpened(payload: OSNotificationPayload) {
let alert = this.alertCtrl.create({
title: payload.additionalData.nodename,
subTitle: 'My Note : '+payload.additionalData.title1+' <br/> '+'My Why : '+payload.additionalData.mywhy,
message: payload.body,
buttons: [
{
text: 'Utsett',
role: 'cancel',
handler: () => {
console.log('Cancel clicked');
}
},
{
text: 'Det er utført',
handler: () => {
console.log('oke');
this.responseData = result;
this.nav.setRoot(MynotesPage, {id:payload.additionalData.id});
});
}
}
]
});
alert.present();
}
I can't start intent right from "HandleNotificationOpened" function. Can anybody help me with this problem.