Fatal error: Uncaught Error: Class 'HTMLPurifier_Definition' not found in /var/www/up.tantal-metall.com/yii_up/vendor/ezyang/htmlpurifier/library/HTMLPurifier/CSSDefinition.php:7 Stack trace: #0 {main} thrown in /var/www/up.tantal-metall.com/yii_up/vendor/ezyang/htmlpurifier/library/HTMLPurifier/CSSDefinition.php on line 7