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 ('c2ae7368f214cd4e44f651800815cec4','0','18.225.55.151','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716337504','thread.php?goto=lastpost&threadid=8083&sid=c3cbf7217840c94cc1e35a9b8bb75110','0','0','')
mysql error: Duplicate entry 'c2ae7368f214cd4e44f651800815cec4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 22.05.2024 @ 02:25
Script: /thread.php?goto=lastpost&threadid=8083&sid=c3cbf7217840c94cc1e35a9b8bb75110
Referer: