Fatal error: Uncaught Error: Class 'Illuminate\Database\Migrations\Migration' not found in /home/caistbuw/public_html/database/migrations/2018_11_28_104410_modify_units_table_for_multi_unit.php:7 Stack trace: #0 {main} thrown in /home/caistbuw/public_html/database/migrations/2018_11_28_104410_modify_units_table_for_multi_unit.php on line 7