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\BelongsToMany.php:30 Stack trace: #0 {main} thrown in D:\programs\xampp\htdocs\blog\vendor\laravel\framework\src\Illuminate\Database\Eloquent\Relations\BelongsToMany.php on line 30