Quick booking and pending requests

I followed the quick book from and pending requests page tutorials and check over the code to be
use this Corvid example here from the Wix Bookings section.
but i have 2 error while running the example itself without editing any thing:
1- when i checked the pending Appointments collecting the Colum of Requested slot is empty

2- the dropdown of time slot not working in 2nd time showing below error
cannot read property ‘_id’ of undefined. Line 142

 const pending = (await getPendingAppointments()).map(appointment => appointment.requestedSlot._id);

Did you find a solution for 1?