Fatal error: Uncaught Error: Class 'HTMLPurifier_Strategy' not found in /srv/disk3/4464330/www/back.ticket-el.com/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/ValidateAttributes.php:7 Stack trace: #0 {main} thrown in /srv/disk3/4464330/www/back.ticket-el.com/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Strategy/ValidateAttributes.php on line 7