我们被灰度到3.4.7的用户很多出现了这个问题，小程序告警一堆这个错误。我自己手机测试了一下，发现好像不是必现，请重视一下，不要一次复现不了就不管了。

社区陆续也有其他开发者在反馈这个问题：https://developers.weixin.qq.com/community/develop/doc/0006aebd88cd68f454b15dba56e400

MiniProgramError
this.reportBeginPlay is not a function. (In 'this.reportBeginPlay(i,a)', 'this.reportBeginPlay' is undefined)
TypeError: this.reportBeginPlay is not a function. (In 'this.reportBeginPlay(i,a)', 'this.reportBeginPlay' is undefined)
play@https://lib/WAServiceMainContext.js:1:1318251
play@https://lib/WAServiceMainContext.js:1:1321016
ote@https://lib/WAServiceMainContext.js:1:1332749
play@https://lib/WAServiceMainContext.js:1:1336572
I@https://lib/WAServiceMainContext.js:1:923329
p@[native code]
@https://usr//appservice.app.js:826:2370
at <setInterval callback function>
@https://lib/WASubContext.js:1:127086
@https://lib/WASubContext.js:1:159170
p@https://lib/WAServiceMainContext.js:1:162962
@https://lib/WAServiceMainContext.js:1:151225
_onNativeTimer@
global code@