VM8845:1 thirdScriptError
sdk uncaught third Error
module "miniprogram_npm/vant-weapp/mixins/observer/props.js" is not defined
Error: module "miniprogram_npm/vant-weapp/mixins/observer/props.js" is not defined
解决方法：
你只需要把miniprogram_npm/vant-weapp里的组件文件夹都删除，
之后再https://github.com/youzan/vant-weapp下载一份vant， 将dist文件夹（vant-weapp-dev\vant-weapp-dev\dist）中的文件复制到项目的miniprogram_npm/vant-weapp
即下载一份vant，之后替换掉项目中的文件
之后保存解决
