I am fairly new to Xcode and swift. I am trying to send a notification from firebase to my app . Thanks Again import Firebase import FirebaseMessaging import UserNotifications import UIKit @main class AppDelegate: UIResponder, UIApplicationDelegate, MessagingDelegate, UNUserNotificationCenterDelegate { func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {               Messaging.messaging().delegate = self     UNUserNotificationCenter.current().delegate = self          UNUserNotificationCenter.current().requestAuthorization(options:[.alert, .sound, .badge]) {success, _ in guard success else {                   return             }          print("Success in APNS registry")              }     application.registerForRemoteNotifications()                   return true     }          func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {         messaging.token {token, _ in             guard let token = token else {                 return             }         print("Token: (token)")                                   }     } }