canvasToTempFilePath 在开发工具中正常，Android 真机调试报错，求解！！！！

https://developers.weixin.qq.com/s/8FoaeVmB7Vqw

微信版本 8.0.6, 基础库 2.17.0, 运行系统 30

U.createEvent is not a function

TypeError: U.createEvent is not a function

    at Q (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:30288)

    at eval (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:30586)

    at e.exports (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:35748)

    at eval (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:30537)

    at y.<computed> (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:33814)

    at O (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:33543)

    at Function.eval (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:33581)

    at <setTimeout callback function>

    at eval (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:110325)

    at eval (eval at n.call.document (http://127.0.0.1:14262/remote-debug/runtime.js?devtools_ignore=true:1:13107), <anonymous>:2:101470)