Fatal error: Uncaught Error: Class "HTMLPurifier_AttrDef" not found in /var/www/html/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Pixels.php:6
Stack trace:
#0 {main}
thrown in /var/www/html/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/HTML/Pixels.php on line 6