No Rooms or Resources found in Calendar¶

When using the calendar_resource_management app, sometimes, rooms and resources that were added via occ don't show up in the calendar immediately.

To troubleshoot, please check the following:

1. Ensure that each room / resource has a unique email address. Rooms and resources get assigned their own principal which needs a unique email address to work.
2. Ensure that the cron job that syncs the data has run recently by querying the jobs table:
   SELECT * FROM oc_jobs WHERE class LIKE '%UpdateCalendarResourcesRoomsBackgroundJob%';
   You can trigger the job again by running occ background-job:execute <the_jobs_database_id>
3. Ensure that each data set is complete. A room for example always needs to be part of a story which is part of a building.