Fatal error: Uncaught Error: Class 'App\Http\Controllers\Controller' not found in /var/www/dev/public/app/Http/Controllers/Calendar/CalendarNiv_1_2_Controller.php:15 Stack trace: #0 {main} thrown in /var/www/dev/public/app/Http/Controllers/Calendar/CalendarNiv_1_2_Controller.php on line 15