maxframe.errors.SessionAlreadyClosedError: Session xxxxxxxxxxxxxx is already closed

[Liuzq666]

按照示例文档https://help.aliyun.com/zh/maxcompute/user-guide/getting-started?spm=a2c4g.11186623.0.0.246618feRCpbyi 使用，一直报错 maxframe.errors.SessionAlreadyClosedError: Session xxxxxxxxxxxxxxxxx is already closed