Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Model" not found in C:\xampp\htdocs\ojs\lib\pkp\classes\job\models\FailedJob.php:23 Stack trace: #0 {main} thrown in C:\xampp\htdocs\ojs\lib\pkp\classes\job\models\FailedJob.php on line 23