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 ('59de5d96e751c8edc9f38186d5816d76','0','3.141.202.187','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714980339','board.php?boardid=574&sid=366f5000e5152f6c1da46ea726313f42','0','0','')
mysql error: Duplicate entry '59de5d96e751c8edc9f38186d5816d76' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 09:25
Script: /board.php?boardid=574&sid=366f5000e5152f6c1da46ea726313f42
Referer: http://wehrbauten.de/board.php?boardid=574&sid=366f5000e5152f6c1da46ea726313f42