Fatal error: Uncaught Error: Class "Illuminate\Database\Migrations\Migration" not found in E:\xampp\htdocs\stms\database\migrations\2021_10_25_090454_create_assignment_groups_table.php:7 Stack trace: #0 {main} thrown in E:\xampp\htdocs\stms\database\migrations\2021_10_25_090454_create_assignment_groups_table.php on line 7