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 ('ee51aba531bfce3e68545ede1630582f','0','3.146.176.254','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715487995','register.php?sid=6bd5e28bb47025d47f6535c69a0898ab','0','0','')
mysql error: Duplicate entry 'ee51aba531bfce3e68545ede1630582f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 06:26
Script: /register.php?sid=6bd5e28bb47025d47f6535c69a0898ab
Referer: