Fatal error: Uncaught Error: Class 'HTMLPurifier_ChildDef' not found in E:\Cloud\OneDrive\ITBX\GIT\API\vendor\ezyang\htmlpurifier\library\HTMLPurifier\ChildDef\Custom.php:9 Stack trace: #0 {main} thrown in E:\Cloud\OneDrive\ITBX\GIT\API\vendor\ezyang\htmlpurifier\library\HTMLPurifier\ChildDef\Custom.php on line 9