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 ('3eefdb4dc828dea540030a96de60b5bb','0','3.137.171.121','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715005345','addreply.php?action=quote&postid=100292&sid=0e4e9ea8d578f0585a6cdc752d59ed8e','0','0','')
mysql error: Duplicate entry '3eefdb4dc828dea540030a96de60b5bb' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.16-MariaDB-0ubuntu0.22.04.1
php version: 5.6.40
Date: 06.05.2024 @ 16:22
Script: /addreply.php?action=quote&postid=100292&sid=0e4e9ea8d578f0585a6cdc752d59ed8e
Referer: