Fatal error: Uncaught Error: Interface 'Illuminate\Contracts\Queue\ShouldQueue' not found in /home/kingelearn/public_html/vendor/laravel/framework/src/Illuminate/Queue/CallQueuedClosure.php:14 Stack trace: #0 {main} thrown in /home/kingelearn/public_html/vendor/laravel/framework/src/Illuminate/Queue/CallQueuedClosure.php on line 14