Fatal error: Uncaught Error: Class 'yii\db\Migration' not found in /home/wittyly/public_html/live/hr-witty/migrations/m201026_043458_add_col_owner_table_name_on_property_value_tbl.php:8 Stack trace: #0 {main} thrown in /home/wittyly/public_html/live/hr-witty/migrations/m201026_043458_add_col_owner_table_name_on_property_value_tbl.php on line 8