微信小程序中为什么在index.json中报错

为什么这段代码在index.json中报错，大佬捞一下孩子吧
![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/386925580146111.png "#left"
{
"usingComponents": {
//引入vant组件
"van-progress": "@vant/weapp/progress/index",
"van-divider": "@vant/weapp/divider",
"van-tag": "@vant/weapp/tag/index",
"van-collapse": "@vant/weapp/collapse/index",
"van-collapse-item": "@vant/weapp/collapse-item/index",
"van-panel": "@vant/weapp/panel/index",
"van-toast": "@vant/weapp/toast/index"
}
}

这里重复了，把第一个usingComponents（下面标红框）去了

第三行花括号后加个逗号试试