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 ml.*, m.*, ml.weight AS link_weight
FROM 
{menu_links} ml
LEFT OUTER JOIN {menu_router} m ON m.path = ml.router_path
WHERE  (ml.link_path = :db_condition_placeholder_0) AND (ml.language = :db_condition_placeholder_1) ; Array
(
    [:db_condition_placeholder_0] =&amp;gt; node/500
    [:db_condition_placeholder_1] =&amp;gt; en
)
 in i18n_menu_link_load() (line 885 of /var/www/vhosts/weddinggifts.com.hk/httpdocs/sites/all/modules/i18n/i18n_menu/i18n_menu.module).</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:393:&amp;quot;SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT ml.*, m.*, ml.weight AS link_weight
FROM 
{menu_links} ml
LEFT OUTER JOIN {menu_router} m ON m.path = ml.router_path
WHERE  (ml.link_path = :db_condition_placeholder_0) AND (ml.language = :db_condition_placeholder_1) ; Array
(
    [:db_condition_placeholder_0] =&amp;amp;gt; node/500
    [:db_condition_placeholder_1] =&amp;amp;gt; en
)
&amp;quot;;s:9:&amp;quot;%function&amp;quot;;s:21:&amp;quot;i18n_menu_link_load()&amp;quot;;s:5:&amp;quot;%file&amp;quot;;s:94:&amp;quot;/var/www/vhosts/weddinggifts.com.hk/httpdocs/sites/all/modules/i18n/i18n_menu/i18n_menu.module&amp;quot;;s:5:&amp;quot;%line&amp;quot;;i:885;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://weddinggifts.com.hk/taxonomy/term/57
    [:db_insert_placeholder_7] =&amp;gt; 
    [:db_insert_placeholder_8] =&amp;gt; 54.166.141.12
    [:db_insert_placeholder_9] =&amp;gt; 1529527172
)
 in dblog_watchdog() (line 163 of /var/www/vhosts/weddinggifts.com.hk/httpdocs/modules/dblog/dblog.module).</p><hr />