VM662:5 TypeError: Cannot read property 'mode' of undefined

    at :17464/__pageframe__/__dev__/WAWebview.js:2

    at g (:17464/__pageframe__/__dev__/WAWebview.js:2)

    at :17464/__pageframe__/__dev__/WAWebview.js:2

    at Array.forEach (<anonymous>)

    at :17464/__pageframe__/__dev__/WAWebview.js:2

    at :17464/__pageframe__/__dev__/WAWebview.js:2

    at b (:17464/__pageframe__/__dev__/WAWebview.js:2)

    at Object.cb (:17464/__pageframe__/__dev__/WAWebview.js:2)

    at :17464/__pageframe__/__dev__/WAWebview.js:2

    at Array.forEach (<anonymous>)

不知道去哪里找错误地址，开发者工具如何调试这类问题？