Fatal error: Uncaught Error: Class 'HTMLPurifier_AttrTransform' not found in /home/kingelearn/public_html/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Background.php:6
Stack trace:
#0 {main}
thrown in /home/kingelearn/public_html/vendor/ezyang/htmlpurifier/library/HTMLPurifier/AttrTransform/Background.php on line 6