rcon php is not work

require_once "rcon.php";

	$host = $host_ST;
	$port = $port_ST;
	$password = $password_ST;
	$timeout = $timeout_ST;

use Thedudeguy\Rcon;

$rcon = new Rcon($host, $port, $password, $timeout);
error_reporting(E_ALL);

	if($rcon->connect()) echo "+";
        else echo "-";


Help, please, tried the old solution to this error.