操作员在阅读文件时期望prolog

Question

当我尝试将文件作为操作符预期读取时，我收到错误。

class NewsViewController: UIViewController {

    var loggedUser : LoginUser?

    override func viewDidLoad() {
        super.viewDidLoad()
        print("check object: \(loggedUser)")
        dump(loggedUser)
    }

    @IBAction func testBtnPressed(_ sender: Any) {
        print("check object: \(loggedUser)")
        dump(loggedUser)
    }


}