这是什么原因？

Cannot create property 'msg' on string ''

TypeError: Cannot create property 'msg' on string ''

at eval (weapp:///pages/address/address.js:88:22)

at success (weapp:///Base.js:36:19)

at Function.i.(anonymous function) (debug:///[publib]:2:1877760)

at h (debug:///[publib]:2:120991)

at eval (debug:///[publib]:2:121816)

at A (debug:///[publib]:2:602617)

at Function.eval (debug:///[publib]:2:801569)

at h (debug:///[publib]:2:120991)

at eval (debug:///[publib]:2:121816)

at eval (debug:///[publib]:2:763559)