Drupal mySql error.
Additional uncaught exception thrown while handling exception.
Original
PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: DELETE FROM {semaphore} WHERE (name = :db_condition_placeholder_0) AND (value = :db_condition_placeholder_1) ; Array ( [:db_condition_placeholder_0] => field_info_types:es [:db_condition_placeholder_1] => 106839620454e6020a194117.84906296 ) in lock_release() (line 254 of /var/www/clients/client0/web5/web/includes/lock.inc).
Comprovar a la consola SQL el 'max_allowed_packet'
SHOW VARIABLES LIKE 'max_allowed_packet'
Mínim 16M
max_allowed_packet
16777216