Cannot read property 'has' of undefined 是啥原因

一往无前

Cannot read property 'has' of undefined
隐藏详细
TypeError: Cannot read property 'has' of undefined at c.preShowPage (http://localhost:8080/x5/UI2/v_2713da82defa404ea6d69ad4902677e2l_zh_CNs_desktopd_pc/system/core.min.js:71:303353) at c.showPage (http://localhost:8080/x5/UI2/v_2713da82defa404ea6d69ad4902677e2l_zh_CNs_desktopd_pc/system/core.min.js:71:302963) at Object.l.showPage (http://localhost:8080/x5/UI2/v_2713da82defa404ea6d69ad4902677e2l_zh_CNs_desktopd_pc/system/core.min.js:71:278320) at Model.loggedIn (http://localhost:8080/x5/UI2/v_59975163d7994a9dbf3458af16f7e224l_zh_CNs_desktopd_pc/chat/wex5/index.js:133:17) at r.extend.fire (http://localhost:8080/x5/UI2/v_2713da82defa404ea6d69ad4902677e2l_zh_CNs_desktopd_pc/system/core.min.js:71:236440) at r.extend.fireEvent (http://localhost:8080/x5/UI2/v_2713da82defa404ea6d69ad4902677e2l_zh_CNs_desktopd_pc/system/core.min.js:71:237604) at Object.l.fireEvent (http://localhost:8080/x5/UI2/v_2713da82defa404ea6d69ad4902677e2l_zh_CNs_desktopd_pc/system/core.min.js:71:279039) at Object.justep.Baas.sendRequest.success (http://localhost:8080/x5/UI2/v_59975163d7994a9dbf3458af16f7e224l_zh_CNs_desktopd_pc/chat/wex5/js/im.wex5.impl.js:154:21) at Object.t.ajax.complete

大雁子

你好，楼主请问你是在做什么操作的时候出现的报错？？