Fatal error: Uncaught Error: Class 'HTMLPurifier_VarParser' not found in D:\xampp\htdocs\psp\backend\vendor\ezyang\htmlpurifier\library\HTMLPurifier\VarParser\Flexible.php:8 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\ezyang\htmlpurifier\library\HTMLPurifier\VarParser\Flexible.php on line 8