[27-May-2018 16:54:54 Europe/London] PHP Warning:  Cannot modify header information - headers already sent by (output started at /home/sasvirtualgroup/crew.sasvirtual.co.uk/core/modules/MassMailer/MassMailer.php:2) in /home/sasvirtualgroup/crew.sasvirtual.co.uk/index.php on line 78