Fatal error: Uncaught Error: Class 'HTMLPurifier_AttrDef' not found in /home/app/htdocs/ninja/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Length.php:6
Stack trace:
#0 {main}
thrown in /home/app/htdocs/ninja/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrDef/CSS/Length.php on line 6