SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Invalid SQL: SELECT u.userid, u.username, u.invisible, u.receivepm, u.lastactivity, uf.* FROM bb1_users u, bb1_groups g LEFT JOIN bb1_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: 12.05.2024 @ 08:14
Script: /team.php?sid=037a16ef53be9681b136ce9a0770bd04
Referer: