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 ('aee1c23ac325acb8b003ba9a8584fe4a','0','3.145.97.248','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714327366','board.php?boardid=95&sid=c51f217e6f9d2748b015524329c0edee','0','0','')
mysql error: Duplicate entry 'aee1c23ac325acb8b003ba9a8584fe4a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 28.04.2024 @ 20:02
Script: /board.php?boardid=95&sid=c51f217e6f9d2748b015524329c0edee
Referer: http://wehrbauten.de/board.php?boardid=95&sid=c51f217e6f9d2748b015524329c0edee