SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('9998110c4e311900f55a5b55d70b2432','0','18.223.134.29','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714763001','index.php?sid=b8f0aa8ca531d1834ce47c4e397d1820','0','0','')
mysql error: Duplicate entry '9998110c4e311900f55a5b55d70b2432' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.16-MariaDB-0ubuntu0.22.04.1-log
php version: 5.6.40-nmm8
Date: 03.05.2024 @ 21:03
Script: /forum/index.php?sid=b8f0aa8ca531d1834ce47c4e397d1820
Referer: