Fatal error: Uncaught Error: Interface "Illuminate\Contracts\Queue\ShouldQueue" not found in /home/stackloom/public_html/ideas/vendor/laravel/framework/src/Illuminate/Notifications/SendQueuedNotifications.php:15 Stack trace: #0 {main} thrown in /home/stackloom/public_html/ideas/vendor/laravel/framework/src/Illuminate/Notifications/SendQueuedNotifications.php on line 15