[PreviewInEditor] Cannot read property 'listFiles' of undefined

Cocos Creator
1

Hello everyone,

I have been trying to access the local folder to collect data from selected folder.
For the same I am using native.fileUtils module but getting this following error:
[PreviewInEditor] native.Downloader is not a constructor

tried with other platforms too but facing the same.
my editor version is - 3.8.3

here is my code-

import { _decorator, CCClass, Component, log, native} from 'cc';
const { ccclass, property } = _decorator;
const { fileUtils } = native;
const dir = "D:/Cocos Practice/CreatorProjector/HelloWorld/";

@ccclass('AppManager')
export class AppManager extends Component {
    //@property({ type: native })
    
    start() {
        log(dir);
        //let folder = "D:/Cocos Practice/CreatorProjector/HelloWorld/"
        let path = fileUtils.listFiles(dir);
        let filenum = path.length;
        log("path",path);
        log("filenum",filenum);       

    }
}```