Fatal error: Call to undefined function module_list() in /var/www/italyxp/includes/bootstrap.inc on line 1356

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] => 1470127096a11e4fd2fc243.36871695 ) in lock_release_all() (line 269 of /var/www/italyxp/includes/lock.inc).