小程序有十几天没打开~一打开就出错了！

这个是什么错误？

VM54:1 Error: app.json 的 widgets 字段为空

console.error @ VM54:1

(anonymous) @ search:5

app.json:

{   "pages": [     "pages/newoff/user/userContent",     "pages/index/index",           "pages/logs/logs",     "pages/newoff/video/video"   ],   "window": {     "backgroundTextStyle": "dark",     "navigationBarBackgroundColor": "#fff",     "navigationBarTitleText": "NewOffo",     "navigationBarTextStyle": "black"   } }

求解！