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 ('4339896a4930c006d00e9a5d0632e614','0','3.138.105.255','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715576455','board.php?boardid=333&sid=6ae05501d8f21e959dc5feff392d2ea0','0','0','')
mysql error: Duplicate entry '4339896a4930c006d00e9a5d0632e614' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 07:00
Script: /board.php?boardid=333&sid=6ae05501d8f21e959dc5feff392d2ea0
Referer: http://wehrbauten.de/board.php?boardid=333&sid=6ae05501d8f21e959dc5feff392d2ea0