Node.js 如何使NodeJS中S3上的特定文件夹的cloudfrontcahce无效？

我想使节点js中s3存储桶中的一个文件夹（及其子文件夹）无效。 这是我目前使用的脚本：

var clearCloudfrontCache = function() {
    console.log("clearCloudfrontCache function started");
    var cloudfront = new AWS.CloudFront();
    var currentTimeStamp = new Date().getTime();
    var params = {
        DistributionId: distribution_ID,
        InvalidationBatch: {
          CallerReference: currentTimeStamp.toString(),
          Paths: {
            Quantity: NumberOfFiles,
            Items: FormerFiles
          }
      }
    };
    cloudfront.createInvalidation(params, function(err, data) {
      if (err) {
        console.log("Error came while cloudfront cache removal",err);
      }
      else {
        console.log("Cloudfront cache removed",data);
      }
    });

这就是我得到的答案：

Error came while cloudfront cache removal InvalidArgument: Your request contains one or more invalid invalidation paths.
    at Request.extractError (/app/node_modules/aws-sdk/lib/protocol/rest_xml.js:53:29)
    at Request.callListeners (/app/node_modules/aws-sdk/lib/sequential_executor.js:106:20)
    at Request.emit (/app/node_modules/aws-sdk/lib/sequential_executor.js:78:10)
    at Request.emit (/app/node_modules/aws-sdk/lib/request.js:688:14)
    at Request.transition (/app/node_modules/aws-sdk/lib/request.js:22:10)
    at AcceptorStateMachine.runTo (/app/node_modules/aws-sdk/lib/state_machine.js:14:12)
    at /app/node_modules/aws-sdk/lib/state_machine.js:26:10
    at Request.<anonymous> (/app/node_modules/aws-sdk/lib/request.js:38:9)
    at Request.<anonymous> (/app/node_modules/aws-sdk/lib/request.js:690:12)
    at Request.callListeners (/app/node_modules/aws-sdk/lib/sequential_executor.js:116:18)

cloudfront缓存删除无效参数时出错：您的请求包含一个或多个无效无效路径。
at Request.extractError（/app/node_modules/aws sdk/lib/protocol/rest_xml.js:53:29）
at Request.callListeners（/app/node_modules/aws sdk/lib/sequential_executor.js:106:20）
at Request.emit（/app/node_modules/aws sdk/lib/sequential_executor.js:78:10）
at Request.emit（/app/node_modules/aws sdk/lib/Request.js:688:14）
at Request.transition（/app/node_modules/aws sdk/lib/Request.js:22:10）
在AcceptorStateMachine.runTo（/app/node_modules/aws sdk/lib/state_machine.js:14:12）
at/app/node_modules/aws sdk/lib/state_machine.js:26:10
应要求。（/app/node_modules/aws sdk/lib/request.js:38:9）
应要求。（/app/node_modules/aws sdk/lib/request.js:690:12）
at Request.callListeners（/app/node_modules/aws sdk/lib/sequential_executor.js:116:18）

您要传递的文件的值是多少？您可能需要在它前面加一个

/

@BaluVyamajala，它是一个文件夹路径，如“/testfolder/*”