问无法读取未定义的属性“sessionid”；在api请求成功回调函数时,如何解决？

thirdScriptErro

Cannot read property 'sessionid' of undefined;at api request success callback function

TypeError: Cannot read property 'sessionid' of undefined

at Object.success (http://127.0.0.1:18739/appservice/B928B712C50F69CFDF4EDF15BE655464.js:148:56)

at http://127.0.0.1:18739/appservice/B928B712C50F69CFDF4EDF15BE655464.js:120:69

at Function.o.(anonymous function) (http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:1433844)

at http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:127441

at A (http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:541064)

at i.<anonymous> (http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:920396)

at i.emit (http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:599174)

at rc (http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:921258)

at http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:922537

at http://127.0.0.1:18739/appservice/__dev__/WAService.js:2:584147

错误代码如上 ，求助！