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 ('bf39dfbb1a102cc6b6f6c3e3b30b117c','0','18.216.45.231','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1743832650','addreply.php?action=quote&postid=26408','0','0','')
mysql error: Duplicate entry 'bf39dfbb1a102cc6b6f6c3e3b30b117c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 05.04.2025 @ 07:57
Script: /addreply.php?action=quote&postid=26408
Referer: http://gttempel.de/addreply.php?action=quote&postid=26408