Attributes that are $hidden can't be mass assigned when using validators.

If you have an attribute e.g. 'password' that is in $fillable and $hidden, the attribute will be ignored if you have a validator set on the repository.
If you do:

```php
protected $rules = [
"password" => "required|min:8",
];
```

You will get an exception whether or not a password was in your payload/user data or not.