浏览器运行正常，打包到app报错，报错信息如下

14:50:19.535 thirdScriptError
14:50:19.543 undefined is not an object (evaluating 'document.body'); [Component] Event Handler Error @ pages/common/login#handleEvent
14:50:19.563 confirmBox
14:50:19.583 gotoRegister
14:50:19.604 gotoRegister@[native code]
14:50:19.644 forEach@[native code]
14:50:19.685 forEach@[native code]
14:50:19.706 handleEvent
14:50:19.726 safeCallback
14:50:19.766 __hookEvent
14:50:19.847 n
14:50:19.870 subscribeHandler
14:50:19.927 E
14:50:19.968 consume
14:50:19.988 map@[native code]

哪位大神看一下，指导指导