SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb3_user2awards (userid, awardid, autoawardid, beschreibung) VALUES ('2999', '29', '23', 'Top xQuiz')
mysql error: Duplicate entry '2999-29-23' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.23-MariaDB-1:10.5.23+maria~ubu2004-log
php version: 5.6.40-nmm8
Date: 15.05.2024 @ 15:14
Script: /board.php?boardid=89&page=1&daysprune=1000&sortfield=starter&sortorder=ASC&sid=f5c0e2c542197e6daf9f9a2b2d6c4a56
Referer: