Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Model" not found in /home/immunoglow/public_html/immunoglow/vendor/kalnoy/nestedset/tests/models/DuplicateCategory.php:3 Stack trace: #0 {main} thrown in /home/immunoglow/public_html/immunoglow/vendor/kalnoy/nestedset/tests/models/DuplicateCategory.php on line 3