diff --git a/demo/demo.js b/demo/demo.js
index d6d23e0..1f761cb 100644
--- a/demo/demo.js
+++ b/demo/demo.js
@@ -4369,7 +4369,6 @@ function getFileCompressTask() {
 // 从 Bucket 里拆出 AppId
 const AppId = config.Bucket.substr(config.Bucket.lastIndexOf('-') + 1);
 
-createDataset();
 // 创建数据集
 function createDataset() {
   const key = 'dataset'; // 固定值
diff --git a/package.json b/package.json
index a06e9bd..cd511de 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "cos-nodejs-sdk-v5",
-  "version": "2.14.2",
+  "version": "2.14.3",
   "description": "cos nodejs sdk v5",
   "main": "index.js",
   "types": "index.d.ts",
diff --git a/sdk/advance.js b/sdk/advance.js
index a0d7907..e882fb4 100644
--- a/sdk/advance.js
+++ b/sdk/advance.js
@@ -1597,9 +1597,6 @@ function downloadFile(params, callback) {
                 Output: writeStream,
               },
               function (err, data) {
-                if (err && writeStream.writableFinished === false) {
-                  writeStream.close && writeStream.close();
-                }
                 if (aborted) return;
 
                 // 处理错误和进度
diff --git a/sdk/base.js b/sdk/base.js
index ff9bb53..f32fbe2 100644
--- a/sdk/base.js
+++ b/sdk/base.js
@@ -4215,6 +4215,9 @@ function _submitRequest(params, callback) {
   };
 
   sender.on('error', function (err) {
+    if (params.outputStream) {
+      params.outputStream.close && params.outputStream.close();
+    }
     markLastBytesWritten();
     cb(util.error(err));
   });
diff --git a/sdk/util.js b/sdk/util.js
index ebe4558..566dae2 100644
--- a/sdk/util.js
+++ b/sdk/util.js
@@ -529,14 +529,8 @@ var apiWrapper = function (apiName, apiFn) {
             delete params.AppId;
           }
         }
-        // 除了下列 api，如果 Key 是 / 开头，强制去掉第一个 /
-        var dontRemoveApi = ['sliceUploadFile', 'uploadFile', 'downloadFile', 'sliceCopyFile'];
-        if (
-          !self.options.UseRawKey &&
-          params.Key &&
-          params.Key.substr(0, 1) === '/' &&
-          !dontRemoveApi.includes(apiName)
-        ) {
+        // 如果 Key 是 / 开头，强制去掉第一个 /
+        if (!self.options.UseRawKey && params.Key && params.Key.substr(0, 1) === '/') {
           params.Key = params.Key.substr(1);
         }
       }