Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Notifications\Factory' not found in E:\xampp\htdocs\vendor\laravel\framework\src\Illuminate\Support\Testing\Fakes\NotificationFake.php:13 Stack trace: #0 {main} thrown in E:\xampp\htdocs\vendor\laravel\framework\src\Illuminate\Support\Testing\Fakes\NotificationFake.php on line 13