Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Notifications\Dispatcher" not found in /home/deborapsol/laravel/vendor/laravel/framework/src/Illuminate/Support/Testing/Fakes/NotificationFake.php:17 Stack trace: #0 {main} thrown in /home/deborapsol/laravel/vendor/laravel/framework/src/Illuminate/Support/Testing/Fakes/NotificationFake.php on line 17