I would like to know the number of particiants in the meeting room

My account type is Pro.
I would like to know the participant’s information in the meeting room or the number of people there.
Is this possible with the API?
If so, which API should I use?
It can be done using DashBoad 's Api [Get Meeting List], but my account can not seem to be able to use it.

You can use DashBoad’s Api [https://zoom.github.io/api/#retrieve-meeting-participants ].

If you try to call it?Please provide the error messages.