Staff members error when adding appointment from dashboard

[Valentina R]

Staff members are allowed to create new appointments (even with orders) through the Dashboard, but it throws an error. In the end, it creates the appointment (and order) and everything seems to be working ok.

Found here: https://bizzthemes.com/forums/topic/letting-internal-users-make-bookings/

And here: https://bizzthemes.com/forums/topic/permission-denied-when-trying-to-connect-google-calendar/

[BookingWP]

Fixed with 3.8.8