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 ('b2d1fe542516c9bf028fbb5d8783d3b5','0','18.222.96.135','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715493103','memberslist.php?sid=4a2a80a39863bb9cd39d41b6f7dc73b0','0','0','')
mysql error: Duplicate entry 'b2d1fe542516c9bf028fbb5d8783d3b5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.16-MariaDB-0ubuntu0.22.04.1
php version: 5.6.40
Date: 12.05.2024 @ 07:51
Script: /memberslist.php?sid=4a2a80a39863bb9cd39d41b6f7dc73b0
Referer: