Email naar een vriend: “Promotiecode Next exception ‘Zend_Controller_Exception’ with message ‘Cannot send headers; headers already sent in /home/httpd/vhosts/interface.daisycon.com/module/Daisycon/modules/publisher/affiliatemarketing/views/scripts/material/export/promotioncodes/csv.phtml, line 25#0 /home/httpd/vhosts/interface.daisycon.com/vendor/zendframework/zendframework1/library/Zend/Controller/Response/Abstract.php(115): Zend_Controller_Response_Abstract->canSendHeaders(true) –”