Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /var/www/html/autocar/vendor/kartik-v/yii2-tree-manager/src/migrations/m230417_200117_alter_tree.php:8 Stack trace: #0 {main} thrown in /var/www/html/autocar/vendor/kartik-v/yii2-tree-manager/src/migrations/m230417_200117_alter_tree.php on line 8