Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Relations\HasOne" not found in /var/www/html/casavio-qa2.das24.it/httpdocs/laravel/vendor/staudenmeir/laravel-adjacency-list/src/Eloquent/Relations/RootAncestor.php:15 Stack trace: #0 {main} thrown in /var/www/html/casavio-qa2.das24.it/httpdocs/laravel/vendor/staudenmeir/laravel-adjacency-list/src/Eloquent/Relations/RootAncestor.php on line 15