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 menu_router.*
FROM 
{menu_router} menu_router
WHERE  (tab_root = :db_condition_placeholder_0) AND (context &amp;lt;&amp;gt; :db_condition_placeholder_1) 
ORDER BY weight ASC, title ASC; Array
(
    [:db_condition_placeholder_0] =&amp;gt; node/%
    [:db_condition_placeholder_1] =&amp;gt; 2
)
 in menu_local_tasks() (line 1940 of /var/www/dav/data/www/davavto29.ru/includes/menu.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:349:&amp;quot;SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT menu_router.*
FROM 
{menu_router} menu_router
WHERE  (tab_root = :db_condition_placeholder_0) AND (context &amp;amp;lt;&amp;amp;gt; :db_condition_placeholder_1) 
ORDER BY weight ASC, title ASC; Array
(
    [:db_condition_placeholder_0] =&amp;amp;gt; node/%
    [:db_condition_placeholder_1] =&amp;amp;gt; 2
)
&amp;quot;;s:9:&amp;quot;%function&amp;quot;;s:18:&amp;quot;menu_local_tasks()&amp;quot;;s:5:&amp;quot;%file&amp;quot;;s:52:&amp;quot;/var/www/dav/data/www/davavto29.ru/includes/menu.inc&amp;quot;;s:5:&amp;quot;%line&amp;quot;;i:1940;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; https://davavto29.ru/node/52656
    [:db_insert_placeholder_7] =&amp;gt; http://davavto29.ru/node/52656
    [:db_insert_placeholder_8] =&amp;gt; 216.73.216.243
    [:db_insert_placeholder_9] =&amp;gt; 1752308958
)
 in dblog_watchdog() (line 160 of /var/www/dav/data/www/davavto29.ru/modules/dblog/dblog.module).</p><hr />