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 ('5cb47df23ddfcc88cf06b50ce1f29086','0','3.129.23.30','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715045161','thread.php?goto=lastpost&threadid=639&sid=6f7e2cd87501a7ea5b4b7cf110bcc650','0','0','')
mysql error: Duplicate entry '5cb47df23ddfcc88cf06b50ce1f29086' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 03:26
Script: /thread.php?goto=lastpost&threadid=639&sid=6f7e2cd87501a7ea5b4b7cf110bcc650
Referer: