Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Mail\Mailable' not found in /Users/caiosilva/Sites/Laravel-test/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php:22 Stack trace: #0 {main} thrown in /Users/caiosilva/Sites/Laravel-test/vendor/laravel/framework/src/Illuminate/Mail/Mailable.php on line 22