Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m210223_051804_alter_table_activity_log_alter_module_id_column.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m210223_051804_alter_table_activity_log_alter_module_id_column.php on line 8