获取会议室信息缺少会议主题 Missing meeting topic for obtaining meeting room information

获取会议室邮箱的会议室，有时候会获取不到会议主题，同一个会议，开两个服务，一个能获取到一个获取不到

The conference room that obtains the email address of the conference room may sometimes not be able to obtain the conference theme. For the same conference, if two services are opened, one can be obtained while the other cannot