Warning: mysql_query(): MySQL server has gone away in /home/swisstravelclub.ru/app/code/lib.php on line 22

Warning: mysql_query(): Error reading result set's header in /home/swisstravelclub.ru/app/code/lib.php on line 22
MySQL error:
MySQL server has gone away
/home/swisstravelclub.ru/app/code/lib.php:3; in query:
SELECT * from site_structure_desc WHERE site_structure__ID=344 AND language__ID=1 ORDER BY version DESC LIMIT 1