Additional uncaught exception thrown while handling exception.

<h1>Additional uncaught exception thrown while handling exception.</h1><h2>Original</h2><p>PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT n.title AS title, ft.field_tagline_value AS field_tagline_value
FROM 
{node} n
LEFT OUTER JOIN {field_data_field_tagline} ft ON ft.entity_id = n.nid
INNER JOIN {field_data_field_event} fe ON n.nid = fe.field_event_nid
WHERE  (fe.entity_id = :db_condition_placeholder_0) ; Array
(
    [:db_condition_placeholder_0] =&amp;gt; 9647
)
 in life_core_node_load() (line 276 of /var/www/friends/data/www/friends.podari-zhizn.ru/sites/all/modules/custom/life_core/life_core.module).</p><h2>Additional</h2><p>PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT expire, value FROM {semaphore} WHERE name = :name; Array
(
    [:name] =&amp;gt; rules_get_cacheevent_watchdog
)
 in lock_may_be_available() (line 167 of /var/www/friends/data/www/friends.podari-zhizn.ru/includes/lock.inc).</p><hr /><h1>Uncaught exception thrown in shutdown function.</h1><p>PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: DELETE FROM {semaphore} 
WHERE  (value = :db_condition_placeholder_0) ; Array
(
    [:db_condition_placeholder_0] =&amp;gt; 28379614769452701b27012.65736964
)
 in lock_release_all() (line 269 of /var/www/friends/data/www/friends.podari-zhizn.ru/includes/lock.inc).</p><hr />