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 ('00cb6eb170b08e0ea2de697694eefd28','0','18.119.116.43','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715888650','board.php?boardid=690&sid=b9c869712e308879ac1e55db4fac293f','0','0','')
mysql error: Duplicate entry '00cb6eb170b08e0ea2de697694eefd28' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 21:44
Script: /board.php?boardid=690&sid=b9c869712e308879ac1e55db4fac293f
Referer: http://wehrbauten.de/board.php?boardid=690&sid=b9c869712e308879ac1e55db4fac293f