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 ('ffe1d8d053c45510c59baa705428491e','0','18.117.169.241','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715777287','login.php?sid=e27e37fa5e0502df7e4fc3fe81f0e050','0','0','')
mysql error: Duplicate entry 'ffe1d8d053c45510c59baa705428491e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 14:48
Script: /login.php?sid=e27e37fa5e0502df7e4fc3fe81f0e050
Referer: