Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Relations\Relation" not found in /opt/lampp/htdocs/forum/flarum/vendor/illuminate/database/Eloquent/Relations/HasManyThrough.php:13 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/illuminate/database/Eloquent/Relations/HasManyThrough.php on line 13