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 ('12fff80ca11453f8ca606f5df5b9069a','0','3.139.82.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714956419','board.php?boardid=223&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=cdca8ec18008e28cbff00f86fd309855','0','0','')
mysql error: Duplicate entry '12fff80ca11453f8ca606f5df5b9069a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 02:46
Script: /board.php?boardid=223&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=cdca8ec18008e28cbff00f86fd309855
Referer: