Upload website in UIWebView Swift 3

Good morning staff

I can load a web page quietly into a UIWebView with the following Swift code:

import UIKit

class ConteudoOnlineViewController: UIViewController {
@IBOutlet weak var pagina: UIWebView!

override func viewDidLoad() {
    super.viewDidLoad()

    pagina.delegate = self as? UIWebViewDelegate
    if let url = URL(string: "http://www.meusite.com.br/login.aspx") {
        let request = URLRequest(url: url)
        pagina.loadRequest(request)
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
    }
}

But my site has a login page and I created a validation to access directly by passing a token, it happens that now I can not load this page in UIWebView, it simply does not appear anything. Could someone give me an idea of what I should do ??

import UIKit

class ConteudoOnlineViewController: UIViewController {
@IBOutlet weak var pagina: UIWebView!

override func viewDidLoad() {
    super.viewDidLoad()

    pagina.delegate = self as? UIWebViewDelegate
    if let url = URL(string: "http://www.meusite.com.br/login.aspx?token=6D5C6A4BF468D43ABD521A3C9D3469C3​") {
        let request = URLRequest(url: url)
        pagina.loadRequest(request)
    }
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
    }
}