nserver is not an array, but string

```
array_unique(): Argument #1 ($array) must be of type array, string given
File: /code/vendor/kevinoo/phpwhois/src/whois.ip.lacnic.php
Line: 74
```

Test code 

```
<?php
require __DIR__ . '/vendor/autoload.php';
$whois = new \phpWhois\Whois();
var_dump($whois->whois('45.225.3.34'));
```