Fatal error: Uncaught Error: Class "yii\base\Event" not found in /home/corporatenwocp/public_html/vendor/verbb/vizy/src/events/ModifyPurifierConfigEvent.php:6 Stack trace: #0 {main} thrown in /home/corporatenwocp/public_html/vendor/verbb/vizy/src/events/ModifyPurifierConfigEvent.php on line 6