run sample code and getting empty blank screen

[YogeshSDM]

I just run sample code and getting empty blank screen.
path for .glb is correct. But still getting blank screen.
See attachment.

I would be appreciated if you help me out

[YogeshSDM]

some gab files are not showing
dd.zip
dd.zip

[xgkp]

import UIKit
import SceneKit
import UIKit
import GLTFSceneKit

class YZGltViewController: UIViewController {
    
    override func viewDidLoad() {
        super.viewDidLoad()
        
        let scnView = SCNView()
        var scene: SCNScene
        do {
            let sceneSource = try GLTFSceneSource(named: "cylinderEngine.glb")
            scene = try sceneSource.scene()
            scnView.scene = scene
            scnView.frame = view.bounds
            scnView.allowsCameraControl = true
            scnView.autoenablesDefaultLighting = true
            view.addSubview(scnView)
        } catch {
            print("\(error.localizedDescription)")
            return
        }
    }
}