MySQL error in file: \engine\modules\exp.ph.php at line 17

Error Number: 2006

The Error returned was:
MySQL server has gone away

SQL query:

SELECT dle_users.foto as f FROM dle_users, dle_post_extras WHERE dle_users.user_id = dle_post_extras.user_id AND dle_post_extras.news_id = '4088'