Hello
Fatal error: Uncaught Error: Class "yii\helpers\Html" not found in /var/www/html/_old/vendor/azbuco/yii2-user/mail/user-notification-html.php:12 Stack trace: #0 {main} thrown in /var/www/html/_old/vendor/azbuco/yii2-user/mail/user-notification-html.php on line 12