Xcode 11, Main Interface fixed with Main.storyboard

Swift 5 with iOS 13

One more changes require in info.plist file under Application Scene Manifest group.

Change name in Application Scene Manifest also.

Additional:
If you want to create the root window without a storyboard, you need removing the Main storyboard file base name and Storyboard Name item from Info.plist, and create the window programmatically in SceneDelegate:

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    var window: UIWindow?

    @available(iOS 13.0, *)
    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
        guard let windowScene = (scene as? UIWindowScene) else { return }
        window = UIWindow(windowScene: windowScene)
        // continue to create view controllers for window
    }

    //......
}

Can you please change "Main storyboard file base name" to your storyboard file name.