Additional uncaught exception thrown while handling exception.

Original

PDOException: SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT alias FROM {url_alias} WHERE source = :source AND language IN (:language, :language_none) ORDER BY language ASC, pid DESC; Array ( [:source] => node/1370 [:language] => it [:language_none] => und ) in drupal_lookup_path() (line 150 of /web/www/pra/includes/path.inc).

Additional

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] => 0 [:db_insert_placeholder_1] => php [:db_insert_placeholder_2] => %type: !message in %function (line %line of %file). [:db_insert_placeholder_3] => a:6:{s:5:"%type";s:12:"PDOException";s:8:"!message";s:291:"SQLSTATE[HY000]: General error: 2006 MySQL server has gone away: SELECT alias FROM {url_alias} WHERE source = :source AND language IN (:language, :language_none) ORDER BY language ASC, pid DESC; Array ( [:source] => node/1370 [:language] => it [:language_none] => und ) ";s:9:"%function";s:20:"drupal_lookup_path()";s:5:"%file";s:30:"/web/www/pra/includes/path.inc";s:5:"%line";i:150;s:14:"severity_level";i:3;} [:db_insert_placeholder_4] => 3 [:db_insert_placeholder_5] => [:db_insert_placeholder_6] => http://pralab.diee.unica.it/it/biblio?f%5Bkeyword%5D=10&f%5Bauthor%5D=188&amp%3Bf%5Bauthor%5D=518&amp%3Bamp%3Bf%5Bauthor%5D=332&s=year&o=desc [:db_insert_placeholder_7] => [:db_insert_placeholder_8] => 192.168.1.6 [:db_insert_placeholder_9] => 1576084801 ) in dblog_watchdog() (line 160 of /web/www/pra/modules/dblog/dblog.module).