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 ('d8981458fe1385d981a701c03236f7fc','0','52.15.147.20','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716263849','thread.php?threadid=140330&threadview=0&hilight=&hilightuser=0&sid=786e9441403ff0eff7fcf813bae98d03&page=238','0','0','')
mysql error: Duplicate entry 'd8981458fe1385d981a701c03236f7fc' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.1.48-MariaDB-0ubuntu0.18.04.1
php version: 7.4.33
Date: 21.05.2024 @ 05:57
Script: /thread.php?threadid=140330&threadview=0&hilight=&hilightuser=0&sid=786e9441403ff0eff7fcf813bae98d03&page=238
Referer: