异步图片加载错误

我在遇到异步图像加载时遇到了一个奇怪的错误，当我进入视图时，应该按照预期进行显示，然后由于某种原因图像掉落，我所看到的只是“加载中...”。占位符。我在构建加载器时使用了本教程，以下脚本是我的文章视图。我有一个全局函数文件，其中包含对应用程序中各种功能的合并和基础的引用。我只是不完全理解为什么图像会短暂显示，然后调用占位符。谢谢！

import SwiftUI

struct ArticleView: View {
    @Environment(\.imageCache) var cache: ImageCache
    var articleID: Int
    @ObservedObject private var data = Result2()
    let defaults = UserDefaults.standard
    
    @Environment(\.presentationMode) var presentationMode: Binding<PresentationMode>
    
    init(articleID: Int){
        self.articleID = articleID
        self.data.results.append(Story.init(id: 0, title: "test", image: "", story: "", published: "", author: ""))
        self.loadArticle(CDNLink: "http://\(self.defaults.object(forKey: "domain") as! String)/cdn?funct=fetchArticle&articleID=\(self.articleID)")
    }
    
    var backBtn: some View {
        Button(action: {
            self.presentationMode.wrappedValue.dismiss()
        }, label:{
            Image(systemName: "lessthan.circle")
                .resizable()
                .frame(width: 30, height: 30)
                .foregroundColor(Color.primaryRed)
                .padding(.top, 6)
                .padding(.leading, 10)
        })
    }
    
    var body: some View {
        VStack(alignment: .leading){
            ScrollView {
                ForEach(data.results, id: \.id) { result in
                Group{
                    AsyncImage(
                        url: URL(string: result.image)!,
                        placeholder: Text("Loading..."), configuration: { $0.resizable() })
                        .frame(height: 250)
                        .aspectRatio(contentMode: .fill)
                    VStack(alignment: .leading) {
                        Text("\(result.title)")
                            .font(.system(size: 18))
                            .fontWeight(.heavy)
                            .foregroundColor(.primary)
                            .multilineTextAlignment(.leading)
                        HStack {
                            Text("\(result.author)")
                                .font(.system(size: 12))
                                .foregroundColor(.secondary)
                                .multilineTextAlignment(.leading)
                            Text("|")
                                .font(.system(size: 12))
                                .foregroundColor(.secondary)
                                .multilineTextAlignment(.leading)
                            Text("\(result.published)")
                                .font(.system(size: 12))
                                .foregroundColor(.secondary)
                                .multilineTextAlignment(.leading)
                        }.frame(width: UIScreen.main.bounds.size.width - 40, alignment: .leading)
                    }.frame(width: UIScreen.main.bounds.size.width - 40)
                }
                    Text("\(result.story)")
                }
            }
        }
        .frame(maxWidth: .infinity)
        .navigationBarBackButtonHidden(true)
        .navigationBarItems(leading: backBtn)
    }

    func loadArticle(CDNLink: String) {
    guard let url = URL(string: CDNLink) else {
        print("Invalid URL")
        return
    }
    
    let request = URLRequest(url: url)
    
    URLSession.shared.dataTask(with: request) { data, response, error in
        if error != nil {
            print("Fetch failed: \(error?.localizedDescription ?? "Unknown error")")
            return
        } else {
            do {
                let decodedResponse = try JSONDecoder().decode(Response2.self, from: data!)
                print(decodedResponse)
                DispatchQueue.main.async {
                    self.data.results.append(contentsOf: decodedResponse.results)
                    self.data.results.remove(at: 0)
                }
                } catch let err {
                    print("Error parsing: \(err)")

                }
            }
        }.resume()
    }
}

struct Response2: Codable {
    var results: [Story]
}

struct Story: Codable, Identifiable {
    var id: Int
    var title: String
    var image: String
    var story: String
    var published: String
    var author: String
}

struct ArticleView_Previews: PreviewProvider {
    static var previews: some View {
        ArticleView(articleID: 0)
    }
}

编辑：我已经提出了建议的更改，但是我仍然看到错误，您可以通过签出此链接实时查看错误。