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 ('555d5b3c9d2e8f524c4e1a3ae07d0b72','0','3.15.195.107','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715763286','thread.php?goto=lastpost&threadid=145&sid=dfae9fb9ceb50e4e5cc90a3baa075429','0','0','')
mysql error: Duplicate entry '555d5b3c9d2e8f524c4e1a3ae07d0b72' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.11.5-MariaDB-deb10-keen
php version: 5.3.29
Date: 15.05.2024 @ 10:54
Script: /thread.php?goto=lastpost&threadid=145&sid=dfae9fb9ceb50e4e5cc90a3baa075429
Referer: