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 t__0.*
FROM 
{metatag_config} t__0
WHERE  (instance IN  (:db_condition_placeholder_0)) ; Array
(
    [:db_condition_placeholder_0] =&amp;gt; global
)
 in ctools_export_load_object() (line 462 of /home/an2k/Apl/etalon_drupal/sites/all/modules/ctools/includes/export.inc).</p><h2>Additional</h2><p>PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: INSERT INTO {watchdog} (uid, type, message, variables, severity, link, location, referer, hostname, timestamp) VALUES (:db_insert_placeholder_0, :db_insert_placeholder_1, :db_insert_placeholder_2, :db_insert_placeholder_3, :db_insert_placeholder_4, :db_insert_placeholder_5, :db_insert_placeholder_6, :db_insert_placeholder_7, :db_insert_placeholder_8, :db_insert_placeholder_9); Array
(
    [:db_insert_placeholder_0] =&amp;gt; 0
    [:db_insert_placeholder_1] =&amp;gt; php
    [:db_insert_placeholder_2] =&amp;gt; %type: !message in %function (line %line of %file).
    [:db_insert_placeholder_3] =&amp;gt; a:6:{s:5:&amp;quot;%type&amp;quot;;s:12:&amp;quot;PDOException&amp;quot;;s:8:&amp;quot;!message&amp;quot;;s:218:&amp;quot;SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT t__0.*
FROM 
{metatag_config} t__0
WHERE  (instance IN  (:db_condition_placeholder_0)) ; Array
(
    [:db_condition_placeholder_0] =&amp;amp;gt; global
)
&amp;quot;;s:9:&amp;quot;%function&amp;quot;;s:27:&amp;quot;ctools_export_load_object()&amp;quot;;s:5:&amp;quot;%file&amp;quot;;s:73:&amp;quot;/home/an2k/Apl/etalon_drupal/sites/all/modules/ctools/includes/export.inc&amp;quot;;s:5:&amp;quot;%line&amp;quot;;i:462;s:14:&amp;quot;severity_level&amp;quot;;i:3;}
    [:db_insert_placeholder_4] =&amp;gt; 3
    [:db_insert_placeholder_5] =&amp;gt; 
    [:db_insert_placeholder_6] =&amp;gt; http://www.nasledie.ru/?q=node&amp;amp;amp%3Bpage=0%2C0%2C0%2C148%2C0%2C0%2C0%2C6%2C0%2C5&amp;amp;page=0%2C4%2C0%2C0%2C0%2C0%2C1%2C6%2C6%2C5
    [:db_insert_placeholder_7] =&amp;gt; 
    [:db_insert_placeholder_8] =&amp;gt; 127.0.0.1
    [:db_insert_placeholder_9] =&amp;gt; 1713433519
)
 in dblog_watchdog() (line 163 of /home/an2k/Apl/etalon_drupal/modules/dblog/dblog.module).</p><hr /><h1>Uncaught exception thrown in session handler.</h1><p>PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 AS expression
FROM 
{sessions} sessions
WHERE ( (sid = :db_condition_placeholder_0) AND (ssid = :db_condition_placeholder_1) ); Array
(
    [:db_condition_placeholder_0] =&amp;gt; 37fQqNiyE2ue-Z6ADbLjgTZY4g_x3WmmK4DnKq__ODQ
    [:db_condition_placeholder_1] =&amp;gt; 
)
 in _drupal_session_write() (line 209 of /home/an2k/Apl/etalon_drupal/includes/session.inc).</p><hr />