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 ('e6ccf000047f9c1fa2ba913c0d5b67f9','0','52.14.87.152','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715595107','login.php?sid=a9043d78563f121afd15b288f28f52dd','0','0','')
mysql error: Duplicate entry 'e6ccf000047f9c1fa2ba913c0d5b67f9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 12:11
Script: /login.php?sid=a9043d78563f121afd15b288f28f52dd
Referer: http://wehrbauten.de/login.php?sid=a9043d78563f121afd15b288f28f52dd