Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /var/www/www-root/data/www/com7.uz/console/migrations/m210212_050731_add2_slug_column_to_product_variation_table.php:8 Stack trace: #0 {main} thrown in /var/www/www-root/data/www/com7.uz/console/migrations/m210212_050731_add2_slug_column_to_product_variation_table.php on line 8