Fatal error: Uncaught Error: Class 'Yii' not found in /mnt/www/fss/personnel/vendor/yiisoft/yii2-gii/src/views/default/index.php:8 Stack trace: #0 {main} thrown in /mnt/www/fss/personnel/vendor/yiisoft/yii2-gii/src/views/default/index.php on line 8