diff --git a/README.md b/README.md
index cd7484d..e52777d 100644
--- a/README.md
+++ b/README.md
@@ -235,22 +235,17 @@ export default {
 
 <img src="https://501351981.github.io/vue-office/examples/dist/static/wx.png" alt="赞助二维码" width="260"/>
 
-<span style="color: red;">打赏的朋友欢迎**添加微信**或者进入前端开发交流群</span>，交流前端开发中遇到的技术、问题和困惑。
+<span style="color: red;">打赏的朋友欢迎**添加微信**</span>，交流前端开发中遇到的技术、问题和困惑。
 
 >【<span style="color:red;">**仅添加**打赏过的用户，不定期删除屏蔽朋友圈的好友</span>（为什么打赏了才能微信问问题？那别人为什么要先付出时间去解答你的问题？都是成年人了，人与人之间是价值交换，不是单向付出）】
 > [常见问题](https://501351981.github.io/vue-office/examples/docs/guide/faq.html)
 
 <img src="https://501351981.github.io/vue-office/examples/dist/static/wxqrcode.png" alt="个人微信" width="260"/>
 
-<img src="https://501351981.github.io/vue-office/examples/dist/static/qun.png" alt="前端群" width="260"/>
-
 
 ### 恳请各位大佬不吝点赞，开源不易，感谢支持~~
 
 
 ## 我的其他库
-- v-focus-next：一个Vue指令，使用该指令后，在表单中回车之后可以自动聚焦下一个表单元素，大大提升表单填写的流畅性。
-[《v-focus-next》](https://github.com/501351981/v-focus-next)
 
-  
 - HowToCode：前端编程之道，探讨如何写出高质量的前端代码，总结前端编程的各种方法论、原则、思维模型等。[《前端编程之道》](https://github.com/501351981/HowToCode)
diff --git a/core/packages/js-excel/package.json b/core/packages/js-excel/package.json
index d33dac7..4cee31b 100644
--- a/core/packages/js-excel/package.json
+++ b/core/packages/js-excel/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@js-preview/excel",
   "type" :"module",
-  "version": "1.4.4",
+  "version": "1.4.5",
   "description": "",
   "main": "lib/index.js",
   "files": [
diff --git a/core/packages/js-excel/src/main.js b/core/packages/js-excel/src/main.js
index cc69939..fd3d49d 100644
--- a/core/packages/js-excel/src/main.js
+++ b/core/packages/js-excel/src/main.js
@@ -67,7 +67,7 @@ class JsExcelPreview {
         let swapFunc = this.xs.bottombar.swapFunc;
         this.xs.bottombar.swapFunc = function (index) {
             swapFunc.call(that.xs.bottombar, index);
-            that.sheetIndex = index + 1;
+            that.sheetIndex = index;
             setTimeout(()=>{
                 that.xs.reRender();
                 renderImage(that.ctx, that.mediasSource,that.workbookDataSource._worksheets[that.sheetIndex], that.offset);
@@ -100,7 +100,7 @@ class JsExcelPreview {
             this.mediasSource = medias;
             this.workbookDataSource = workbookSource;
             this.offset = null;
-            this.sheetIndex = 1;
+            this.sheetIndex = 0;
             clearCache();
             this.xs.loadData(workbookData);
             renderImage(this.ctx, this.mediasSource,this.workbookDataSource._worksheets[this.sheetIndex], this.offset);
@@ -132,7 +132,10 @@ class JsExcelPreview {
     preview(src){
         return new Promise(((resolve, reject) => {
             getData(src, this.requestOptions).then((res)=>{
-                this.renderExcel(res).then(resolve);
+                this.renderExcel(res).then(resolve).catch(e =>{
+                    this.xs.loadData({});
+                    reject(e);
+                });
             }).catch(e => {
                 this.xs.loadData({});
                 reject(e);