我收到来自firebase的消息，要求通知苹果推送通知。在firebase中，我有苹果推送通知密钥的证书，与Firebase中的Xcode项目中从Apple Developer中提取的ID相同。
但我不知道为什么会发生这种情况，我收到了此错误，它在消息传递扩展中注册了两个令牌：

extension AppDelegate : MessagingDelegate {
  func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {}}

撷取寄件者识别码'########'的FCM Token之前，未设定APNS装置Token。将不会透过APNS传送此FCM Token的通知。请务必在设定APNS装置Token之后，重新撷取FCM Token。
添加了AppDelegate中的内容

import Firebase
import MasivPushIosSdk

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate{

    var firebaseToken: String = ""
    
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

        FirebaseApp.configure()
        self.registerForFirebaseNotification(application: application)
        Messaging.messaging().delegate = self
        return true
    }
    
    func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        Messaging.messaging().apnsToken = deviceToken
    }

    func registerForFirebaseNotification(application: UIApplication) {
        if #available(iOS 10.0, *) {
            // For iOS 10 display notification (sent via APNS)
            UNUserNotificationCenter.current().delegate = self

            let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
            UNUserNotificationCenter.current().requestAuthorization(
                options: authOptions,
                completionHandler: {_, _ in })
        } else {
            let settings: UIUserNotificationSettings =
                UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
            application.registerUserNotificationSettings(settings)
        }

        application.registerForRemoteNotifications()
    }
    
}

extension AppDelegate: MessagingDelegate, UNUserNotificationCenterDelegate {

//MessagingDelegate
    func messaging(_ messaging: Messaging, didReceiveRegistrationToken fcmToken: String?) {
        self.firebaseToken = fcmToken!
        print("Firebase token: \(fcmToken)")
    }

    //UNUserNotificationCenterDelegate
    func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable : Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
        print("APNs received with: \(userInfo)")
     }
}