Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/abertime/new.abertime.com.ua/vendor/carono/yii2-file-upload/migrations/m161228_100819_init.php:3 Stack trace: #0 {main} thrown in /home/abertime/new.abertime.com.ua/vendor/carono/yii2-file-upload/migrations/m161228_100819_init.php on line 3