how to off log? syserr

SYSERR: May  7 03:37:20 :: ChildLoop: AsyncSQL: query failed: Unknown column 'vnum' in 'field list' (query: INSERT DELAYED INTO log (type, time, who, x, y, what, how, hint, ip, vnum) VALUES('ITEM', NOW(), 2, 700000, 0, 10662199, 'SET_SOCKET', '', '', 72729) errno: 1054)