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 ('5accd2615bf6d9f326c16b44fb2268d8','0','18.191.171.160','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1743838714','attachment.php?attachmentid=5156','0','0','')
mysql error: Duplicate entry '5accd2615bf6d9f326c16b44fb2268d8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 05.04.2025 @ 09:38
Script: /attachment.php?attachmentid=5156
Referer: http://gttempel.de/attachment.php?attachmentid=5156