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 ('3e8f5953d68367975ece8a2e10c78eea','0','3.137.181.52','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715310538','thread.php?goto=nextnewest&threadid=2036&sid=be39b73554bd6cd8fcc0373bd99c6d95','0','0','')
mysql error: Duplicate entry '3e8f5953d68367975ece8a2e10c78eea' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 05:08
Script: /thread.php?goto=nextnewest&threadid=2036&sid=be39b73554bd6cd8fcc0373bd99c6d95
Referer: http://wehrbauten.de/thread.php?goto=nextnewest&threadid=2036&sid=be39b73554bd6cd8fcc0373bd99c6d95