[HELP]Mysql

[Eduardo170]

Hello community , help me repair this error I get when I open my console , my server is The OTX Server Version: (2.X.S - 2) - Codename: (Crying Damson)

[30/4/2016 15:10:59] mysql_real_query(): SELECT unitedItems.serial, COUNT(1) AS duplicatesCount FROM (SELECT serial FROM `player_items` UNION ALL SELECT serial FROM `player_depotitems` UNION ALL SELECT serial FROM `tile_items`) unitedItems GROUP BY unitedItems.serial HAVING COUNT(1) > 1; - MYSQL ERROR: Unknown column 'serial' in 'field list' (1054)
[30/4/2016 15:10:59] >> There wasn't duplicated items in the server.

@up