ios – Swift UI await loading of information from API earlier than setupUI

I am struggling to seek out a solution that works, mainly have setup a navigationlist which efficiently shows a mannequin sort array of information, solely subject is when loading knowledge from API the content material tries to load to view earlier than knowledge is prepared. mob resolution under errors resulting from UIHostingController not being run on important thread?

func getGenres(_ completion: @escaping (CompetitionGroup?) -> ()) {

        let headers = [
            "x-rapidapi-key": "api-key***",
            "x-rapidapi-host": "football-web-pages1.p.rapidapi.com"
        ]

        let request = NSMutableURLRequest(url: NSURL(string: "https://football-web-pages1.p.rapidapi.com/competitions.json?embrace=rounds")! as URL,
                                                cachePolicy: .useProtocolCachePolicy,
                                            timeoutInterval: 10.0)
        request.httpMethod = "GET"
        request.allHTTPHeaderFields = headers

        let session = URLSession.shared
        let dataTask = session.dataTask(with: request as URLRequest, completionHandler: { (knowledge, response, error) -> Void in
            if (error != nil) {
                print(error as Any)
            } else {
                let httpResponse = response as? HTTPURLResponse
                
                do {
                    let decoder = JSONDecoder()
                    let comps = strive decoder.decode(CompetitionGroup.self, from: knowledge!)
                    self.competitions = comps
                    completion(self.competitions)
                }
                catch {
                    print("Error in JSON")
                }
            }
        })

        dataTask.resume()
    }

Referred to as in SetupUI():

non-public func setupUI() {
        self.view.backgroundColor = .systemBackground
        self.navigationItem.rightBarButtonItem = UIBarButtonItem(title: "Logout", type: .plain, goal: self, motion: #selector(didTapLogout))
        
        self.view.addSubview(label)
        label.translatesAutoresizingMaskIntoConstraints = false
        
        NSLayoutConstraint.activate([
            label.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
            label.centerYAnchor.constraint(equalTo: self.view.centerYAnchor),
        ])
        
        
        getGenres { (array) in
            // Do operation with array
            competitionslist =  array
            let childView = UIHostingController(rootView: ContentView()) // ERROR HERE
            self.addChild(childView)
            childView.view.body = self.view.bounds
            self.view.addSubview(childView.view)
            childView.didMove(toParent: self)
        }
        //competitionslist =  getComps()                        
        
    }

Have tried varied issues that helped others from Stack Overflow however no pleasure, this one at the very least builds.