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 ('6984ff102ff4b74126b859093fe7c682','0','18.216.21.138','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715575660','thread.php?goto=lastpost&threadid=1461&sid=cbb225f0385ec12b0baad410b9c8a8e8','0','0','')
mysql error: Duplicate entry '6984ff102ff4b74126b859093fe7c682' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 06:47
Script: /thread.php?goto=lastpost&threadid=1461&sid=cbb225f0385ec12b0baad410b9c8a8e8
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=1461&sid=cbb225f0385ec12b0baad410b9c8a8e8