Severity: Warning
Message: Use of undefined constant PROVAB_FLIGHT_BOOKING_SOURCE - assumed 'PROVAB_FLIGHT_BOOKING_SOURCE' (this will throw an Error in a future version of PHP)
Filename: report/print_voucher.php
Line Number: 21
Message: Use of undefined constant PROVAB_HOTEL_BOOKING_SOURCE - assumed 'PROVAB_HOTEL_BOOKING_SOURCE' (this will throw an Error in a future version of PHP)
Line Number: 28
