Fatal error: Uncaught Error: Class "App\Http\Controllers\Controller" not found in D:\programs\xampp\htdocs\backend-test\app\Http\Controllers\Api\Core\DatatableController.php:19 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\backend-test\app\Http\Controllers\Api\Core\DatatableController.php on line 19