Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in C:\xampp\htdocs\datatablecolcolor\Laravel-Datatables-Column-Colors\app\Http\Controllers\Admin\RolesController.php:15 Stack trace: #0 {main} thrown in C:\xampp\htdocs\datatablecolcolor\Laravel-Datatables-Column-Colors\app\Http\Controllers\Admin\RolesController.php on line 15