SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('d4259c587428f1e01b7a533c73322e06','0','18.221.89.183','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715900021','board.php?boardid=136&page=3&daysprune=1000&sortfield=topic&sortorder=ASC','0','0','')
mysql error: Duplicate entry 'd4259c587428f1e01b7a533c73322e06' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 17.05.2024 @ 00:53
Script: /board.php?boardid=136&page=3&daysprune=1000&sortfield=topic&sortorder=ASC
Referer: