Entity Query returning nil

[ayush-narwal]

I am using the following code to initialize my ViewController.

    var arView: ARView { view as! ARView }
    var handAnchor: HandAnchor!
    var handTracker3D: HandTracker3D!

    override func viewDidLoad() {
        super.viewDidLoad()
        setupARView()
        
        // Initialize HandAnchor
        handAnchor = HandAnchor(arView: arView)
        arView.scene.addAnchor(handAnchor)

        // Register the Hand2DSystem
        handAnchor.handTracker2D.setConfidenceThreshold(0.4)
        HandTracking2DSystem.participatingTrackers.append(handAnchor.handTracker2D)
        handTracker3D = HandTracker3D()
        handAnchor.attach(handTracker: handTracker3D)
    }
    
    override func viewDidDisappear(_ animated: Bool) {
        handAnchor.destroy()
        handTracker3D.destroy()
    }
    
    func setupARView() {
        let configuration = ARWorldTrackingConfiguration()
        configuration.planeDetection = [.horizontal, .vertical]
        if ARWorldTrackingConfiguration.supportsFrameSemantics(.smoothedSceneDepth) {
            configuration.frameSemantics.insert(.smoothedSceneDepth)
        }
        arView.session.run(configuration)
        arView.session.delegate = self
        HandTracking2DSystem.registerSystem(with: arView)
    }

The for each block is never getting called. Hence the jointTransforms are not getting updated. the EntityQuery is returning nil probably.

    private static var handAnchorQuery = EntityQuery(where: .has(HandAnchorComponent.self))
    
    func update(context: SceneUpdateContext) {
        context.scene.performQuery(Self.handAnchorQuery).compactMap { $0 as? HandAnchor }.forEach { handAnchor in
            
            let hand2D = handAnchor.handTracker2D.hand2D
            let anchorComponent = handAnchor.handAnchorComponent
            
            guard hand2D.handWasInitiallyIdentified.value,
                  let currentFrame = Self.arView?.session.currentFrame,
                  let sceneDepth = getSceneDepth(currentFrame: currentFrame, anchorComponent: anchorComponent) else { return }
            
            updateEnabled(handAnchor: handAnchor,
                          anchorComponent: anchorComponent,
                          hand2D: hand2D)
            updateTransforms(on: handAnchor, sceneDepth: sceneDepth)
            updateTrackedEntities(on: handAnchor)
        }
    }

when i try to use the 2d system, the coordinates and everything is working perfectly.

What do i do? Can anyone please help in this?

@Reality-Dev