无法转换（'AnyObject？，NSError？ - ＆gt; Void'为'CompletionBlock'（又名'（可选<any>，可选<error>） - ＆gt;（）'）

Question

fileprivate func playVideoId(_ apiId: String) {

    (MApi.sharedMApi() as! MApi).getVideoALaCarta(withID: apiId, completionHandler: { [weak self] (videoObject: AnyObject?, error: NSError?) -> Void in

        if ((error) != nil || (videoObject) == nil) {
            print("ERROR AL DESCARGAR VIDEO A LA CARTA: \(String(describing: error))")
            self?.userInterface?.showLoadingView(false)
        } else {
            self?.userInterface?.presentPlayer(videoObject as! MApi_VideoAlaCarta)
        }
        } as CompletionBlock)
}

和CompletionBlock代码：

$ typedef void（^ CompletionBlock）（id对象，NSError *错误）;