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 ('a794c28e9acabfe2dd67922aebe659b7','0','52.14.168.56','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714939397','login.php?sid=a4071f099c1f31e8489a7a2c3336c9c2','0','0','')
mysql error: Duplicate entry 'a794c28e9acabfe2dd67922aebe659b7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 22:03
Script: /login.php?sid=a4071f099c1f31e8489a7a2c3336c9c2
Referer: http://wehrbauten.de/login.php?sid=a4071f099c1f31e8489a7a2c3336c9c2