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 ('c9045b4a0160fe05d4e3d359a81978df','0','18.220.160.216','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714694859','thread.php?goto=lastpost&threadid=15887&sid=c61a57e13887c2c13ecdb077a9d38e7c','0','0','')
mysql error: Duplicate entry 'c9045b4a0160fe05d4e3d359a81978df' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-cll-lve-log
php version: 5.6.40
Date: 03.05.2024 @ 00:07
Script: /thread.php?goto=lastpost&threadid=15887&sid=c61a57e13887c2c13ecdb077a9d38e7c
Referer: http://www.biker-community.com/thread.php?goto=lastpost&threadid=15887&sid=c61a57e13887c2c13ecdb077a9d38e7c