Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Relations\Relation" not found in /home/oyaagyug/public_html/vendor/kalnoy/nestedset/src/BaseRelation.php:12 Stack trace: #0 {main} thrown in /home/oyaagyug/public_html/vendor/kalnoy/nestedset/src/BaseRelation.php on line 12