As I am trying to run the application with the vision Pro, I receive following error:

ar_image_tracking_provider_t <0x303d45340>: Failed to set up image tracking with error: No images were supplied.

this is my funciton
import Foundation
import RealityKit
import ARKit
import RealityKitContent

var arkitSession = ARKitSession()
@MainActor class ARKitViewModel: ObservableObject{

private let session = ARKitSession()
private let imageTracking = ImageTrackingProvider(referenceImages: ReferenceImage.loadReferenceImages(inGroupNamed: "ref"))
var entityMap : [UUID: ModelEntity] = [:]
func runSession() async {
    Task {
        do {
            try await arkitSession.run([imageTracking])
        } catch {
            print("Error: (error)")
        }
    }
}
var material = SimpleMaterial()

var rootEntity = Entity()
func updateImage(_ anchor: ImageAnchor) {
    if entityMap[anchor.id] == nil {
        let entity = ModelEntity(mesh: .generateSphere(radius: 0.05))
        entityMap[anchor.id] = entity
        rootEntity.addChild(entity)
        entity.transform = Transform(matrix: anchor.originFromAnchorTransform)
    }
}



func processUpdates() async {
    for await _ in imageTracking.anchorUpdates{
        print("test")
    }
}

}

i don’t know why it failed to set up and basically i am trying to use this code to detect and object ,static one?