MySQL error in file: /engine/modules/feedback.php at line 285

Error Number: 4031

The Error returned was:
The client was disconnected by the server because of inactivity. See wait_timeout and interactive_timeout for configuring this behavior.

SQL query:

SELECT name, user_group, user_id FROM dle_users WHERE user_group < '3' AND allow_mail = '1' ORDER BY user_group