Alamofire: Ambiguous use of 'Task' error on 4.4.0

[xuanwenchao]

open func resume() {
    guard let task = task else { delegate.queue.isSuspended = false ; return }

    if startTime == nil { startTime = CFAbsoluteTimeGetCurrent() }

    task.resume()

    NotificationCenter.default.post(
        name: Notification.Name.Task.DidResume,
        object: self,
        userInfo: [Notification.Key.Task: task] // error occurred
    )
}

[jshier]

Make sure you're using the latest Xcode version with a clean environment, as this isn't an issue we see.

[Goallying]

i have this error too . but my Xcode version is 9.0. how to solve it