I want to list events on a conference room's calendar in my organization. The request URI is GET https://graph.microsoft.com/v1.0/users/aRoom@myorg.com/calendar/events , request id is 75854b85-d815-4ede-80f8-8b4a8942d3a8.
I granted the Calendar.Read.Shared permission, among others, but a 503 error occurs every time I try this in Graph Explorer. Detailed error message is ErrorInternalServerTransientError, An internal server error occurred. Try again later.