Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Builder" not found in /home/immunoglow/public_html/immunoglow/vendor/kalnoy/nestedset/src/QueryBuilder.php:15 Stack trace: #0 {main} thrown in /home/immunoglow/public_html/immunoglow/vendor/kalnoy/nestedset/src/QueryBuilder.php on line 15