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 ('40eb9d8061e0bd0f7f729f31fdc1027e','0','18.118.138.33','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715498922','jgs_portal.php?sid=c7ad6b190998745b745e2b9a01956274','0','0','')
mysql error: Duplicate entry '40eb9d8061e0bd0f7f729f31fdc1027e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 09:28
Script: /jgs_portal.php?sid=c7ad6b190998745b745e2b9a01956274
Referer: http://wehrbauten.de/jgs_portal.php?sid=c7ad6b190998745b745e2b9a01956274