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 ('8fd66baa7d02d26068be21c5ec3a36a4','0','3.144.9.141','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714717842','thread.php?goto=lastpost&threadid=2307&sid=fa2b3555647c252e3b81ebc1dc2295f2','0','0','')
mysql error: Duplicate entry '8fd66baa7d02d26068be21c5ec3a36a4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 08:30
Script: /thread.php?goto=lastpost&threadid=2307&sid=fa2b3555647c252e3b81ebc1dc2295f2
Referer: