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 ('a9eaa26caaf8d916e5fc56a21ab58cdd','0','3.147.103.234','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715619602','profile.php?userid=344&sid=be8118602c32291a2e69be315c9b97f6','0','0','')
mysql error: Duplicate entry 'a9eaa26caaf8d916e5fc56a21ab58cdd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 19:00
Script: /profile.php?userid=344&sid=be8118602c32291a2e69be315c9b97f6
Referer: http://wehrbauten.de/profile.php?userid=344&sid=be8118602c32291a2e69be315c9b97f6