SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('4b98e2c121be07f1810785b66bf0e7a2','0','18.227.114.125','claudebot','1713467824','thread.php?threadid=528&page=3&sid=684221e6331ee92936e2a7e381d81a4b','0','0','')
mysql error: Duplicate entry '4b98e2c121be07f1810785b66bf0e7a2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.11.4-MariaDB-1~deb12u1
php version: 5.6.40-68+0~20230902.80+debian12~1.gbpa2012b
Date: 18.04.2024 @ 21:17
Script: /thread.php?threadid=528&page=3&sid=684221e6331ee92936e2a7e381d81a4b
Referer: