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