The error 'TypeError: value.hasOwnProperty is not a function' can occur when objects are created without the standard Object prototype (e.g., via Object.create(null) or certain parsing methods). Using Object.prototype.hasOwnProperty.call() is the safe way to check for property existence on any object. Fixed in: - GetSlotsInputPipe (isById, isByUsernameAndEventTypeSlug, isByTeamSlugAndEventTypeSlug) - CancelBookingInputPipe (isCancelSeatedBookingInput) - CreateBookingInputPipe (isRecurringBookingInput, isInstantBookingInput) Co-authored-by: Devin AI <158243242+devin-ai-integration[bot]@users.noreply.github.com>