FetchingDecodedData.swift

func fetchData() async 
     throws  {
        guard let url = URL(string: urlString) else { return }

        let (data, response) = try await URLSession.shared.data(for: URLRequest(url: url))
        guard (response as? HTTPURLResponse)?.statusCode == 200 else { throw FetchError.badRequest }

        Task { @MainActor in
            imageData = try JSONDecoder().decode(PandaCollection.self, from: data)
        }
    }