SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_user2awards (userid, awardid, autoawardid, beschreibung) VALUES ('28', '23', '1', 'Vielschreiber')
mysql error: Duplicate entry '28-23-1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.1.26-MariaDB-0+deb9u1
php version: 5.3.29
Date: 24.04.2024 @ 01:38
Script: /wbb2/thread.php?threadid=100450&goto=lastpost&sid=991fbc754159b6abbe4b22d7781eb171
Referer: