在范围内找不到类型“MessagingRemoteMessage”

Question

我正在尝试使用 firebase 获取 InApp 消息，但每次编写 firebase 函数时都会出现此错误。

public func messaging(_ messaging: Messaging, didReceive remoteMessage: MessagingRemoteMessage) {
    print("Received data message: \(remoteMessage.appData)")
    if let apsDic = remoteMessage.appData as? [String:Any] {
        EngagementMessage.sharedInstance.presentEngagementCompaign(data: apsDic)
    }
}

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