Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /var/www/html/autocar/vendor/yiisoft/yii2-queue/src/drivers/db/migrations/M170601155600Priority.php:17 Stack trace: #0 {main} thrown in /var/www/html/autocar/vendor/yiisoft/yii2-queue/src/drivers/db/migrations/M170601155600Priority.php on line 17