in DemoProjects/NowPlayingView/NowPlayingView/ViewController.swift [340:344]
func showError(_ errorDescription: String) {
let alert = UIAlertController(title: "Error!", message: errorDescription, preferredStyle: UIAlertController.Style.alert)
alert.addAction(UIAlertAction(title: "OK", style: UIAlertAction.Style.default, handler: nil))
self.present(alert, animated: true, completion: nil)
}