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 ('ac6aa909f26f8b3feab5b93dacca02ef','0','3.23.102.227','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745295366','thread.php?postid=11842','0','0','')
mysql error: Duplicate entry 'ac6aa909f26f8b3feab5b93dacca02ef' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 06:16
Script: /thread.php?postid=11842
Referer: http://gttempel.de/thread.php?postid=11842