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 ('6958c9164388a3de02c2a3c6bde0b99e','0','18.225.11.98','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714699450','addreply.php?postid=11424&sid=d65623ef09eecd355925f4368b9d02ac','0','0','')
mysql error: Duplicate entry '6958c9164388a3de02c2a3c6bde0b99e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 03:24
Script: /addreply.php?postid=11424&sid=d65623ef09eecd355925f4368b9d02ac
Referer: http://wehrbauten.de/addreply.php?postid=11424&sid=d65623ef09eecd355925f4368b9d02ac