检索JSON数据时出现Exc_Bad_Instruction错误

Question

我编写了简单的代码来从News API获取JSON数据。我有一个API密钥并按如下方式实现：

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

    let url = URL(string: " https://newsapi.org/v1/articles?source=the-next-web&sortBy=latest&apiKey=af5f94cdf07e42ee877a3f2c2199d097")

    let config = URLSessionConfiguration.default

    config.httpAdditionalHeaders = [
        "user_key": "xxxxxxxxxxxxxxxxxxxxxxxxx"
    ]

    let task = URLSession.shared.dataTask(with: url!) {
        (data, response, error) in if error != nil {
            print("Error")
        }
        else {
            if let content = data {
                do {
                    let myJson = try JSONSerialization.jsonObject(with: content, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject
                    if let articles = myJson["articles"] as? NSDictionary {
                        if let titles = articles["title"] {
                            print(titles)
                        }
                    }
                }
                catch {}
            }
        }
    }
    task.resume()
}

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

}

然而，有了这个，应用程序崩溃并给出错误：“EXC_BAD_INSTRUCTION（code = EXC_I386_INVOP，subcode = 0x0）” 为什么会出现此错误以及如何解决？

编辑：删除网址中的空格似乎解决了问题，但现在控制台无法打印（标题）（控制台上没有显示任何内容）