Fatal error: Uncaught Error: Class 'HTMLPurifier_Token_Tag' not found in /var/www/app/appregwebservice/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Token/Start.php:6 Stack trace: #0 {main} thrown in /var/www/app/appregwebservice/vendor/ezyang/htmlpurifier/library/HTMLPurifier/Token/Start.php on line 6