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 ('f4f8e31de1d461b811a10419a9999da6','0','18.216.94.152','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714330598','register.php?sid=9d10061af516f25162c7f0807dbf5356','0','0','')
mysql error: Duplicate entry 'f4f8e31de1d461b811a10419a9999da6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 28.04.2024 @ 20:56
Script: /register.php?sid=9d10061af516f25162c7f0807dbf5356
Referer: