Fatal error: Uncaught Error: Class "HTMLPurifier_AttrDef" not found in E:\laragon\www\pos\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\URI\IPv4.php:7 Stack trace: #0 {main} thrown in E:\laragon\www\pos\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\URI\IPv4.php on line 7