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 ('6d8be690388fa091867363e2b881d75d','0','3.12.36.30','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714634910','thread.php?threadid=2468&sid=358d9e7378c1d4e60ad9fd1ae69eb70b','0','0','')
mysql error: Duplicate entry '6d8be690388fa091867363e2b881d75d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 09:28
Script: /thread.php?threadid=2468&sid=358d9e7378c1d4e60ad9fd1ae69eb70b
Referer: http://wehrbauten.de/thread.php?threadid=2468&sid=358d9e7378c1d4e60ad9fd1ae69eb70b