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 ('db81d609e56bb7463001fa26af554808','0','216.73.216.151','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1751607835','attachment.php?attachmentid=7395','0','0','')
mysql error: Duplicate entry 'db81d609e56bb7463001fa26af554808' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 04.07.2025 @ 07:43
Script: /attachment.php?attachmentid=7395
Referer: