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 ('2fcbb55be28210f4499fcb8cc141ee74','0','3.133.109.211','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715697694','thread.php?threadid=7463&sid=473510d3927781b4e18c92a869060249','0','0','')
mysql error: Duplicate entry '2fcbb55be28210f4499fcb8cc141ee74' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 14.05.2024 @ 16:41
Script: /thread.php?threadid=7463&sid=473510d3927781b4e18c92a869060249
Referer: