WkWebView not showing error loading in SwiftUI - swiftui

Question

I am attempting to show when a web page does not load, for example when I enter an invalid address such as
htps://ww.mybadexample.com
Here the code:
struct WebTestView: UIViewRepresentable {
typealias UIViewType = WKWebView
let url: String
func makeCoordinator() -> WebTestView.Coordinator {
Coordinator(self)
}
func makeUIView(context: Context) -> WKWebView {
guard let url = URL(string: url) else {
return WKWebView()
}
let webView = WKWebView()
let request = URLRequest(url: url)
webView.navigationDelegate = context.coordinator
webView.load(request)
return webView
}
func updateUIView(_ uiView: WKWebView, context: Context) {
}
}
extension WebTestView {
class Coordinator: NSObject, WKNavigationDelegate {
private let parent: WebTestView
init(_ parent: WebTestView) {
self.parent = parent
}
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error) {
print("Failed loading:", error)
}
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
print("Finished loading")
}
}
}
For some reason the following fuction is never called:
func webView(_ webView: WKWebView, didFail navigation: WKNavigation!, withError error: Error)
When I enter a correct url, webView(_, didFinish) is called, so the coordinator seems to be working correctly.
What am I missing? Am I using an incorrect method? Any pointers?
Thanks!