Warning:  [mysql error 2006] MySQL server has gone away

SELECT
    id
  FROM pg_history
  ORDER BY id DESC
  LIMIT 1
; in /home/ozspeed1/public_html/davidplattphotos.com/include/dblayer/functions_mysqli.inc.php on line 847

Fatal error: Uncaught Error: Call to a member function fetch_assoc() on bool in /home/ozspeed1/public_html/davidplattphotos.com/include/dblayer/functions_mysqli.inc.php:913 Stack trace: #0 /home/ozspeed1/public_html/davidplattphotos.com/admin/include/functions_history.inc.php(433): query2array('\nSELECT\n id\n...') #1 /home/ozspeed1/public_html/davidplattphotos.com/include/functions.inc.php(545): history_autopurge() #2 /home/ozspeed1/public_html/davidplattphotos.com/index.php(723): pwg_log() #3 {main} thrown in /home/ozspeed1/public_html/davidplattphotos.com/include/dblayer/functions_mysqli.inc.php on line 913

Warning:  [mysql error 2006] MySQL server has gone away

REPLACE INTO pg_sessions
  (id,data,expiration)
  VALUES('340F26cdc1f4ffd33d5ed1f9793b6c3ded5e','pwg_show_metadata|b:1;pwg_device|s:7:\"desktop\";',now())
; in /home/ozspeed1/public_html/davidplattphotos.com/include/dblayer/functions_mysqli.inc.php on line 847