SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Invalid SQL: SELECT u.userid, u.username, u.invisible, u.receivepm, u.lastactivity, uf.* FROM bb2_users u, bb2_groups g LEFT JOIN bb2_userfields uf ON (u.userid=uf.userid) WHERE u.groupid = g.groupid AND g.ismod=1 ORDER BY u.username ASC
mysql error: Unknown column 'u.userid' in 'on clause'
mysql error number: 1054
Date: 19.04.2024 @ 01:30
Script: /friebeforum/team.php?sid=744a44f22bc5280822c2e4fb262bb4c6
Referer: http://www.ekkehard-friebe.de/friebeforum/team.php?sid=744a44f22bc5280822c2e4fb262bb4c6