Fatal error: Uncaught Error: Class "yii\BaseYii" not found in /home/akg/public_html/craft/vendor/craftcms/cms/lib/yii2/Yii.php:15 Stack trace: #0 {main} thrown in /home/akg/public_html/craft/vendor/craftcms/cms/lib/yii2/Yii.php on line 15