微信开发工具nodejs启动模板，在开发环境可以上传图片，

// 此处主机域名修改成腾讯云解决方案分配的域名

//var host = 'https://xxx.xxx.xxx';

改成生产环境域名后，报下面的错误：

{statusCode: 200, data: "{"code":-1,"error":"[object Object]"}", errMsg: "uploadFile:ok"}

thirdScriptError

Cannot read property 'imgUrl' of undefined;at pages/index/index onShow function;at api uploadFile success callback function

TypeError: Cannot read property 'imgUrl' of undefined