How can I replace a UIViewController with a SwiftUI View?

I am trying to incorporate some SwiftUI into my UIKit based iPhone application. I have a view controller in my Storyboard called ‘SellingNewsViewController’ with an associated “.swift” file. In this “SellingNewsViewController.swift" file, I am using the following code to try and create a UIHostingController to show the SwiftUI code I currently have in another file called “ContentView.swift”.

Code Block 
   class SellingNewsViewController: UIViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
let controller = UIHostingController(rootView: ContentView())
        self.addChild(controller)
        self.view.addSubview(controller.view)
        controller.didMove(toParent: self)
    }

And I have a SwiftUI file in this directory (the code I am trying to run) named ‘ContentView.swift’ which has the following Syntax:

Code Block 
import SwiftUI
import SwiftyJSON
import SDWebImageSwiftUI
import WebKit
struct ContentView: View {
    @ObservedObject var list = getData()
    var body: some View {
        NavigationView{
            List(list.datas){i in
             NavigationLink(destination:
                webView(url: i.url)
                                .navigationBarTitle("", displayMode: .inline)){
                    HStack(spacing: 15){
                       VStack(alignment: .leading, spacing: 10){
                            Text(i.title).fontWeight(.heavy)
                            Text(i.desc)
                        }
                        if i.image != "" {
                            WebImage(url: URL(string: i.image)!, options: .highPriority, context: nil)
                                .resizable()
                                .frame(width: 110, height: 135)
                                .cornerRadius(20).lineLimit(2)
                        }
                    }.padding(.vertical, 15)
                }
            }.navigationBarTitle("Headlines")
        }
    }
}
struct ChildHostingController_Previews: PreviewProvider {
    static var previews: some View {
        ContentView()
    }
}
struct dataType : Identifiable {
    var id : String
    var title : String
    var desc : String
    var url : String
    var image : String
}
class getData : ObservableObject{
    @Published var datas = [dataType]()
    init() {
        let source = "https://newsapi.org/v2/top-headlines?country=gb&category=business&apiKey=<mykeyishere>"
        let url = URL(string: source)!
        let session = URLSession(configuration: .default)
        session.dataTask(with: url) { (data, _, err) in
            if err != nil{
                print((err?.localizedDescription)!)
                return
            }
      let json = try! JSON(data: data!)
            for i in json["articles"] {
                let title = i.1["title"].stringValue
                let description = i.1["description"].stringValue
                let url = i.1["url"].stringValue
                let image = i.1["urlToImage"].stringValue
                let id = i.1["publishedAt"].stringValue
                DispatchQueue.main.async {
                    self.datas.append(dataType(id: id, title: title, desc: description, url: url, image: image))
                }
            }
        }.resume()
    }
}
struct webView : UIViewRepresentable {
 var url : String
    func makeUIView(context: UIViewRepresentableContext<webView>) -> WKWebView{
        let view = WKWebView()
        view.load(URLRequest(url: URL(string: url)!))
        return view
    }
    func updateUIView(_ uiView: WKWebView, context: UIViewRepresentableContext<webView>) {
    }
}

I understand that I need to use a UIHostingController to show SwiftUI views in my UIKit application, however whenever I load up my ‘SellingNewsViewController’, I just receive a blank screen, as shown here -> h ttps://imgur.com/a/GlyWV9i

Am I doing something wrong to try and create/show the UIHostingController?