Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Model" not found in /home/grzicofn/sis.grz-icof.net/app/Models/GradingSystem.php:13 Stack trace: #0 {main} thrown in /home/grzicofn/sis.grz-icof.net/app/Models/GradingSystem.php on line 13