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 ('b3b25258b32d21935d7770b9bfca7254','0','3.137.218.230','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714846495','login.php?sid=69823da960b6c92e3b97ead531c4d752','0','0','')
mysql error: Duplicate entry 'b3b25258b32d21935d7770b9bfca7254' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 20:14
Script: /login.php?sid=69823da960b6c92e3b97ead531c4d752
Referer: http://wehrbauten.de/login.php?sid=69823da960b6c92e3b97ead531c4d752