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 ('9cd9495a80f480eb6c71467a3f7dcc0b','0','18.220.140.173','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745232036','thread.php?postid=4267','0','0','')
mysql error: Duplicate entry '9cd9495a80f480eb6c71467a3f7dcc0b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 21.04.2025 @ 12:40
Script: /thread.php?postid=4267
Referer: http://gttempel.de/thread.php?postid=4267