Fatal error: Uncaught Error: Class 'HTMLPurifier_Definition' not found in C:\xampp\htdocs\reservation\vendor\ezyang\htmlpurifier\library\HTMLPurifier\URIDefinition.php:3 Stack trace: #0 {main} thrown in C:\xampp\htdocs\reservation\vendor\ezyang\htmlpurifier\library\HTMLPurifier\URIDefinition.php on line 3