Error connecting to MySQL

[Clyfia]

In fact the script didn't want to edit the config.php
but now it's saying "Something required was left blank. Please go back and try again."
Do you have an idea what's wrong please?

my config now

<?php
//Rusnak PHP Adoptables Site Configuration File

$dbhost = 'localhost'; //DB Hostname
$dbuser = 'usero'; //DB User
$dbpass = '*******'; //DB Password
$dbname ='data'; //Your database name
$domain ='ajabuisland.x10.mx'; //Your domain name (No http, www or . )
$scriptpath =''; //The folder you installed this script in
$prefix ='adopts_';

?>