Get the name an the description of a link category

http://codex.wordpress.org/Function_Reference/get_term_by

example:

<?php 
$link_id = 23;
$link_category = get_term_by('id',$link_id,'link_category'); 
var_dump($link_category);
?>

Hata!: SQLSTATE[HY000] [1045] Access denied for user 'divattrend_liink'@'localhost' (using password: YES)