请问这是什么错误，近一个月一直出现，但是一直找不到啥原因

undefined is not an object (evaluating \'r.width\')
iF@https://lib/WAGame.js:1:1107707
getTextWidth@https://lib/WAGame.js:1:1108887
hl@https://lib/WAGameAd.js:1:103403
ul@https://lib/WAGameAd.js:1:102465
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
ul@https://lib/WAGameAd.js:1:101666
yl@https://lib/WAGameAd.js:1:105384
@https://lib/WAGameAd.js:1:91817
@https://lib/WAGame.js:1:137873