Fatal error: Uncaught Error: Class "Illuminate\Database\Eloquent\Relations\Relation" not found in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\BelongsTo.php:20 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\BelongsTo.php on line 20