Fatal error: Uncaught Error: Class "yii\base\Event" not found in /home/akg/public_html/craft/vendor/craftcms/ckeditor/src/events/ModifyConfigEvent.php:19 Stack trace: #0 {main} thrown in /home/akg/public_html/craft/vendor/craftcms/ckeditor/src/events/ModifyConfigEvent.php on line 19