A group window expects a time attribute for grouping in a stream environment谢谢

[Appleyuchi]

代码是:
https://paste.ubuntu.com/p/gVGrj2V7ZF/
报错:
A group window expects a time attribute for grouping in a stream environment.
但是代码的数据源中已经有时间属性了.
请问应该怎么修改代码?
谢谢