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 ('421463c5b3c75848acb0453c639cddda','0','3.133.160.14','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715214894','board.php?boardid=357&sid=22d3a6388e22d0d0907388294a105494','0','0','')
mysql error: Duplicate entry '421463c5b3c75848acb0453c639cddda' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 02:34
Script: /board.php?boardid=357&sid=22d3a6388e22d0d0907388294a105494
Referer: