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Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT 1 AS expression FROM {variable} variable WHERE ( (name = :db_condition_placeholder_0) ); Array ( [:db_condition_placeholder_0] => cron_last ) in variable_set() (line 1260 of /var/www/pse/includes/bootstrap.inc).

Additional

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT page_callback FROM {menu_router} WHERE path = :path LIMIT 0, 1; Array ( [:path] => search/node/% ) in custom_search_theme() (line 704 of /var/www/pse/sites/all/modules/contrib/custom_search/custom_search.module).

Uncaught exception thrown in shutdown function.

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] => 1505871536171517fae2a59.69346971 ) in lock_release_all() (line 269 of /var/www/pse/includes/lock.inc).