Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Relations\Relation" not found in I:\www\frameworks\Laravel\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\BelongsTo.php:10 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\BelongsTo.php on line 10