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 ('718edcc94cf7561d33f373104eca0c90','0','216.73.216.48','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1748038480','thread.php?goto=lastpost&threadid=1912','0','0','')
mysql error: Duplicate entry '718edcc94cf7561d33f373104eca0c90' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 24.05.2025 @ 00:14
Script: /thread.php?goto=lastpost&threadid=1912
Referer: http://www.gttempel.de/thread.php?goto=firstnew_thread&threadid=1912