Fatal error: Uncaught Error: Class "HTMLPurifier_AttrDef_URI_IPv4" not found in G:\projects\edutalk-api\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\URI\IPv6.php:9 Stack trace: #0 {main} thrown in G:\projects\edutalk-api\vendor\ezyang\htmlpurifier\library\HTMLPurifier\AttrDef\URI\IPv6.php on line 9