receivedValidAccessTokenFromURL doesn't seem to work in swift

[MaikoHermans]

I'm currently trying to authorize instagram by using the InstagramKit library.
Currently I'm working with swift 3.0 the code looks as follows (for testing purposes)

override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.

        engine = InstagramEngine.shared();
        let iScope: InstagramKitLoginScope = [.comments, .followerList, .likes, .relationships];

        let iAuthURL = engine.authorizationURL(for: iScope);

        loginWebView.loadRequest(URLRequest(url: iAuthURL));
        loginWebView.delegate = self;
    }

    func webView(_ webView: UIWebView, shouldStartLoadWith request: URLRequest, navigationType: UIWebViewNavigationType) -> Bool {
        let url = request.url;
        try! engine.receivedValidAccessToken(from: url!)

        return true;
    }

I've set the following in my info.plist

InstagramAppClientId:             'myid'
InstagramAppRedirectURL:     'http://example.com'

When I put a debug on the request.url. This shows me the following

https://api.instagram.com/oauth/authorize/?client_id=myid&redirect_uri=http%3A//example.com&response_type=token&scope=comments%20relationships%20likes%20follower_list

Looking at it I'm wondering if it goes wrong at the http%3A?
I hope someone knows what is happening and how to fix it

[ToxaZhe]

I have the same error don't know what is the problem

[MaikoHermans]

I have fixed it.
Take a look at my stack overflow question here.
Just scroll the the bottom where I answered my own question.

[ToxaZhe]

thanks))