Fatal error: Uncaught Error: Class 'HTMLPurifier_Lexer_DOMLex' not found in D:\xampp\htdocs\psp\backend\vendor\ezyang\htmlpurifier\library\HTMLPurifier\Lexer\PH5P.php:13 Stack trace: #0 {main} thrown in D:\xampp\htdocs\psp\backend\vendor\ezyang\htmlpurifier\library\HTMLPurifier\Lexer\PH5P.php on line 13