Glur over UIViewController gives Yellow view with restriction sign

[dollar2048]

When I apply .glur(...) over the SwiftUI view which is UIViewControllerRepresentable it gives some Yellow view with a restriction sign:

The code:

import Glur
import SwiftUI

struct GlurView: View {
    var body: some View {
        VCRepresentable()
            .glur(radius: 15, offset: 0.5, interpolation: 0.6, direction: .down)
    }
}

struct VCRepresentable: UIViewControllerRepresentable {
    func makeUIViewController(context: Context) -> UIViewController {
        let vc = UIViewController()
        vc.view.backgroundColor = .red
        return vc
    }

    func updateUIViewController(_ uiView: UIViewController, context: Context) {}
}

#Preview {
    GlurView()
}

What could be the reason? I would appreciate any hint.

Ultimately, I need UIViewController to present AVPlayerViewController with some Player inside.
Or do you have any idea how to implement that blur effect, like in this GitHub repository (without any frosty material background), over the video player?