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 ('6fe5840e4db6d2b74c7bd17d48354ad1','0','52.14.240.178','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714717739','board.php?boardid=446&sid=6462fd2bf021ccc97bca273556bd3257','0','0','')
mysql error: Duplicate entry '6fe5840e4db6d2b74c7bd17d48354ad1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 08:28
Script: /board.php?boardid=446&sid=6462fd2bf021ccc97bca273556bd3257
Referer: http://wehrbauten.de/board.php?boardid=446&sid=6462fd2bf021ccc97bca273556bd3257