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 ('af5419134321edb579c2d0c41bb10b43','0','3.143.239.231','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715952127','index.php?sid=f7b4b979b77acd3112e01b3e2a4dbf0a','0','0','')
mysql error: Duplicate entry 'af5419134321edb579c2d0c41bb10b43' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 17.05.2024 @ 15:22
Script: /index.php?sid=f7b4b979b77acd3112e01b3e2a4dbf0a
Referer: