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 ('d0604d7c0e870867a172784f2b2670a4','0','3.137.187.233','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714583768','thread.php?threadid=2159&goto=lastpost&sid=76a8a221eab8bfc0b1ab50a601c59e16','0','0','')
mysql error: Duplicate entry 'd0604d7c0e870867a172784f2b2670a4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 01.05.2024 @ 19:16
Script: /thread.php?threadid=2159&goto=lastpost&sid=76a8a221eab8bfc0b1ab50a601c59e16
Referer: