Fatal error: Uncaught Error: Class "HTMLPurifier_URIFilter_DisableExternal" not found in /var/www/html/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/DisableExternalResources.php:3 Stack trace: #0 {main} thrown in /var/www/html/vendor/ezyang/htmlpurifier/library/HTMLPurifier/URIFilter/DisableExternalResources.php on line 3