Array
(
    [0] => 500 Service unavailable (with message)
    [1] => Array
        (
            [%type] => PDOException
            [!message] => SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT * FROM {menu_position_rules} WHERE enabled = :enabled ORDER BY weight, rid; Array
(
    [:enabled] => 1
)

            [%function] => menu_position_evaluate_rules()
            [%file] => /var/www/rusvesna.su/public_html/sites/all/modules/menu_position/menu_position.module
            [%line] => 260
            [severity_level] => 3
        )

)