Fatal error: Uncaught Error: Class 'Illuminate\Database\Eloquent\Relations\Relation' not found in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Relations/BelongsTo.php:10 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/kuesioner/vendor/laravel/framework/src/Illuminate/Database/Eloquent/Relations/BelongsTo.php on line 10