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 ('68a1aec947a3db6ba417b7c8f1828663','0','3.137.178.133','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714929009','board.php?boardid=433&daysprune=1000&sortfield=replycount&sortorder=DESC&sid=56c87c9950579ca4482adef6a2346232','0','0','')
mysql error: Duplicate entry '68a1aec947a3db6ba417b7c8f1828663' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 19:10
Script: /board.php?boardid=433&daysprune=1000&sortfield=replycount&sortorder=DESC&sid=56c87c9950579ca4482adef6a2346232
Referer: http://wehrbauten.de/board.php?boardid=433&daysprune=1000&sortfield=replycount&sortorder=DESC&sid=56c87c9950579ca4482adef6a2346232