SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('6b8d456e90870325ef05314478b6e4b9','0','216.73.216.126','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752392148','thread.php?goto=lastpost&threadid=23563&sid=12175d97a365809e689497af3dd791ef','0','0','')
mysql error: Duplicate entry '6b8d456e90870325ef05314478b6e4b9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.22-MariaDB-cll-lve-log
php version: 5.6.40
Date: 13.07.2025 @ 07:35
Script: /thread.php?goto=lastpost&threadid=23563&sid=12175d97a365809e689497af3dd791ef
Referer: