Fatal error: Uncaught Error: Class 'HTMLPurifier_ChildDef_Required' not found in C:\xampp\htdocs\rabani-mobile-api\vendor\ezyang\htmlpurifier\library\HTMLPurifier\ChildDef\Optional.php:10 Stack trace: #0 {main} thrown in C:\xampp\htdocs\rabani-mobile-api\vendor\ezyang\htmlpurifier\library\HTMLPurifier\ChildDef\Optional.php on line 10