Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m191219_044347_alter_org_module_navigation_add_custom_id.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m191219_044347_alter_org_module_navigation_add_custom_id.php on line 8