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 ('bf83e9f5c1846546ecbfb40f27bb3dfd','0','3.139.81.210','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715474606','profile.php?userid=2723&sid=557f38000282b2f4f4f0bf56608f9a58','0','0','')
mysql error: Duplicate entry 'bf83e9f5c1846546ecbfb40f27bb3dfd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-cll-lve-log
php version: 5.6.40
Date: 12.05.2024 @ 00:43
Script: /profile.php?userid=2723&sid=557f38000282b2f4f4f0bf56608f9a58
Referer: http://www.biker-community.com/profile.php?userid=2723&sid=557f38000282b2f4f4f0bf56608f9a58