Slot is taken me

Support forumSlot is taken me
Jay Patel asked 3 years ago
The slot is taken message has been appearing constantly after submitting a booking.
I empty the caching and then I could do one more booking. But after that, the message Slot is taken keep appearing and no booking is possible.  If I click in the calendar, it shows “Please select another day” and you cannot select any slots.
I appreciate some help. Thank you.