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