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 ('d6d9c9033159db71d05c2f097c8ebb65','0','18.218.155.103','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744856496','addreply.php?action=quote&postid=9398','0','0','')
mysql error: Duplicate entry 'd6d9c9033159db71d05c2f097c8ebb65' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 17.04.2025 @ 04:21
Script: /addreply.php?action=quote&postid=9398
Referer: http://gttempel.de/addreply.php?action=quote&postid=9398