SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('c72b61c0f7aa4ebfb88d54876e1a6c97','0','3.139.81.51','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745062585','thread.php?postid=38335','0','0','')
mysql error: Duplicate entry 'c72b61c0f7aa4ebfb88d54876e1a6c97' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.04.2025 @ 13:36
Script: /thread.php?postid=38335
Referer: http://gttempel.de/thread.php?postid=38335