Fatal error: Uncaught Error: Class 'HTMLPurifier_AttrDef' not found in C:\xampp73\htdocs\Respaldos\tracking_cie_v1\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\CSS.php:14 Stack trace: #0 {main} thrown in C:\xampp73\htdocs\Respaldos\tracking_cie_v1\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\CSS.php on line 14