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 ('cb8173700fb9da151a0fa34df24be277','0','3.17.6.75','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715047855','board.php?boardid=427&sid=6d48269cb253bc450fd72cf5dd342edd','0','0','')
mysql error: Duplicate entry 'cb8173700fb9da151a0fa34df24be277' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 04:10
Script: /board.php?boardid=427&sid=6d48269cb253bc450fd72cf5dd342edd
Referer: http://wehrbauten.de/board.php?boardid=427&sid=6d48269cb253bc450fd72cf5dd342edd