Json SWIFT中的网络经理

我正在try 创建一个CRM应用程序，为此，我在我的树莓PI上创建了一个数据库，并使用PHP在URL上创建了JSON结果.

现在，我已经在Swift中创建了下面的网络管理器，但Catch中结尾处的validData错误一直被抛出.我做错了什么？

import Foundation

final class NetworkManager {
    static let shared = NetworkManager()
    static let baseURL = ""
    private let buyersURL = baseURL + ""
    
    private init(){}
    
    func getBuyers(completed: @escaping (Result<[Buyer], CRMError>) -> Void) {
        guard let url = URL(string: buyersURL) else {
            completed(.failure(.invalidURL))
            return
        }
        let task = URLSession.shared.dataTask(with: URLRequest(url: url)) { data, response, error in
            if let _ = error {
                completed(.failure(.unableToComplete))
                return
            }
            
            guard let response = response as? HTTPURLResponse, response.statusCode == 200 else {
                completed(.failure(.invalidResponse))
                return
            }
            
            guard let data = data else {
                completed(.failure(.invalidData))
                return
            }
            
            do {
                let decoder = JSONDecoder()
                let decodedResponse = try decoder.decode(BuyerResponse.self, from: data)
                completed(.success(decodedResponse.request))
            }  catch {
                completed(.failure(.invalidData))
            }
        }
        task.resume()
    }
}

以下是URL上的JSON的结果

以下是我的买家 struct :

import Foundation

struct Buyer: Codable, Identifiable, Hashable{
    let id: Int
    let user_id: Int
    let name: String
    let email: String
    let country: String
    let phone: String
    let second_phone: String
    let whishes: String
    let budget: String
    let timing: String
    let fase: String
    let media: String
    let plans: String
    let extra: String
    let hot: Int
}

struct BuyerResponse : Codable {
    let request: [Buyer]
}

这就是我所说的吸引买家的观点:

struct BuyersView: View {
    @StateObject var viewModel = BuyersViewModel()

    @State var path = NavigationPath()
    
    @State private var buyers: [Buyer] = []
    
    var body: some View {
        NavigationStack(path: $path) {
            VStack{
                CategoryView(categories: viewModel.fases, currentSelection: $viewModel.currentFase)
                HStack{
                    Spacer()
                    NavigationLink("Add buyer", value: 0)
                        .padding()
                }
                List(buyers){ buyer in
                    BuyerCellView(buyer: buyer)
                }
            }
//            .navigationDestination(for: Int.self) { _ in
//                AddBuyerView(path: $path, fases: viewModel.fases, medias: $viewModel.media)
//            }.navigationDestination(for: Buyer.self) { buyer in
//                BuyerDetailView(buyer: buyer)
//            }
        }.onAppear{
             getBuyers()
        }
    }
    
    func getBuyers() {
        NetworkManager.shared.getBuyers { result in
            DispatchQueue.main.async {
                switch result {
                case .success(let buyers):
                    self.buyers = buyers
                case .failure(let error):
                    print(error.localizedDescription)
                }
            }
        }
    }
}

我判断了JSON上的变量和Buyer的 struct 是相同的，但错误一直在发生，我只是希望变量Buyers从JSON返回买家列表.

我在视频的大约6个小时里按照https://www.youtube.com/watch?v=b1oC7sLIgpI&t=22362s的教程进行了

感谢您提前提供帮助