SwiftUI第三方包网络请求使用报错，无参数请求为什么报错

import Alamofire
import Foundation

func news() {
// 接口地址
let url = "http://124.93.196.45:10001/prod-api/press/category/list"

AF.request(url, method: .get, encoder: URLEncodedFormParameterEncoder.default)
    .responseString { data in
        print(data)
    }

}