Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Queue\ShouldQueue' not found in /home/app3/public_html/service/vendor/laravel/framework/src/Illuminate/Contracts/Queue/ShouldBeQueued.php:8 Stack trace: #0 {main} thrown in /home/app3/public_html/service/vendor/laravel/framework/src/Illuminate/Contracts/Queue/ShouldBeQueued.php on line 8