调用百度API接口，一直运行却一直显示如下错误：大佬们帮忙看看，谢谢谢谢。

VM279:1 thirdScriptError
Cannot read property 'avatarUrl' of null;at "pages/contact/contact" page lifeCycleMethod onLoad function
TypeError: Cannot read property 'avatarUrl' of null
at ge.onLoad (http://127.0.0.1:21321/appservice/pages/contact/contact.js:55:44)
at ge. (WAService.js:1:1405279)
at ge.p.__callPageLifeTime__ (WAService.js:1:1405024)
at kt (WAService.js:1:1420331)
at WAService.js:1:1423665
at At (WAService.js:1:1424158)
at Function. (WAService.js:1:1427548)
at i. (WAService.js:1:1396556)
at i.emit (WAService.js:1:463164)
at Object.emit (WAService.js:1:570558)