Fatal error: Uncaught Error: Class 'Illuminate\Foundation\Http\Middleware\CheckForMaintenanceMode' not found in /mnt/volume_lon1_01/backend/admin/app/Http/Middleware/CheckForMaintenanceMode.php:7 Stack trace: #0 {main} thrown in /mnt/volume_lon1_01/backend/admin/app/Http/Middleware/CheckForMaintenanceMode.php on line 7