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 ('6e84ce439fe6fbcab63455ec34d3eaed','0','18.117.151.234','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745313993','thread.php?postid=9833','0','0','')
mysql error: Duplicate entry '6e84ce439fe6fbcab63455ec34d3eaed' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 11:26
Script: /thread.php?postid=9833
Referer: http://gttempel.de/thread.php?postid=9833