Fatal error: Uncaught Error: Interface 'App\Core\Api\Services\Contracts\IPlanService' not found in /home/wwiwil/apps/iwill-laravel/app/Core/Api/Services/PlanService.php:8 Stack trace: #0 {main} thrown in /home/wwiwil/apps/iwill-laravel/app/Core/Api/Services/PlanService.php on line 8