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 ('65c05d7d9a9fe9edec1569d97454598b','0','3.137.218.215','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714532162','thread.php?threadid=6758&goto=lastpost&sid=bdec6fa0e95ada74891b19123f41fbc7','0','0','')
mysql error: Duplicate entry '65c05d7d9a9fe9edec1569d97454598b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 01.05.2024 @ 04:56
Script: /thread.php?threadid=6758&goto=lastpost&sid=bdec6fa0e95ada74891b19123f41fbc7
Referer: