Как сделать видеофон на сайте

SQL Error: Subquery returns more than 1 row at /home/tobiz/sites/tobiz.net/www/system/article.class.php line 365
Array
(
    [code] => 1242
    [message] => Subquery returns more than 1 row
    [query] => SELECT id FROM tobiz_support_sections WHERE id = (SELECT section FROM tobiz_support WHERE dir = 'kak-sdelat-videofon-na-sajte' AND deleted = 0)
    [context] => /home/tobiz/sites/tobiz.net/www/system/article.class.php line 365
)