刚升级的开发工具就报错，基础库1.6.6没事，1.6.4就报错，之前我用的1.6.4的，现在没办法改用1.6.6

VM2644:1 jsEnginScriptError

document.createDocumentFragment is not a function

TypeError: document.createDocumentFragment is not a function

    at _ (http://127.0.0.1:34083/appservice/__dev__/WAService.js:10:29608)

    at y (http://127.0.0.1:34083/appservice/__dev__/WAService.js:10:30678)

    at Function.c._attachShadowRoot (http://127.0.0.1:34083/appservice/__dev__/WAService.js:11:677)

    at Object.p.create [as createElement] (http://127.0.0.1:34083/appservice/__dev__/WAService.js:11:13533)

    at e.value (http://127.0.0.1:34083/appservice/__dev__/WAService.js:12:17263)

    at http://127.0.0.1:34083/appservice/__dev__/WAService.js:12:18003

    at Array.forEach (<anonymous>)

    at e.value (http://127.0.0.1:34083/appservice/__dev__/WAService.js:12:17975)

    at e.value (http://127.0.0.1:34083/appservice/__dev__/WAService.js:12:14921)

    at Object.p.create [as createElement] (http://127.0.0.1:34083/appservice/__dev__/WAService.js:11:13222)