Fatal error: Uncaught Error: Class 'HTMLPurifier_Bootstrap' not found in D:\xampp\htdocs\psp\backend\vendor\ezyang\htmlpurifier\library\HTMLPurifier.autoload.php:11 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\ezyang\htmlpurifier\library\HTMLPurifier.autoload.php on line 11