Fatal error: Uncaught Error: Class "HTMLPurifier_AttrDef" not found in C:\PHP\APPS\dev\aictec_zonetec_web\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\CSS.php:14 Stack trace: #0 {main} thrown in C:\PHP\APPS\dev\aictec_zonetec_web\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\CSS.php on line 14