Fatal error: Uncaught Error: Class "HTMLPurifier_URIScheme" not found in C:\xampp\htdocs\shopLogic\vendor\ezyang\htmlpurifier\library\HTMLPurifier\URIScheme\mailto.php:12 Stack trace: #0 {main} thrown in C:\xampp\htdocs\shopLogic\vendor\ezyang\htmlpurifier\library\HTMLPurifier\URIScheme\mailto.php on line 12