QuickLook and .heic

I"m trying to create a simple app for my students that will display .heic images taken with a nikon and them converted to .heic in the photos app. My attempts only result in the QuickLook viewer showing the images in 2d. Any guidance? Here is my ContentView:

import SwiftUI import QuickLook

struct ContentView: View { @State private var showQuickLook = false @State private var previewURL: URL? = nil // State to store the URL for Quick Look

var body: some View {
    VStack {
        Button("See it in 3D") {
            // Set the URL for the file from the bundle and toggle Quick Look presentation
            if let imageURL = Bundle.main.url(forResource: "Michelia_fuego", withExtension: "heic") {
                previewURL = imageURL // Set the preview URL if the image is found
                showQuickLook.toggle() // Toggle to trigger Quick Look presentation
            } else {
                print("File not found") // Print error if the file is missing
            }
        }
        .quickLookPreview($previewURL) // Binding to the URL
    }
}

}

#Preview { ContentView() }