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 ('6c49fe35c34f52b35387ce558bc7fa76','0','18.118.252.87','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715756949','profile.php?userid=7&sid=def28ff1a8e89c2b7d9194889f4fa6cd','0','0','')
mysql error: Duplicate entry '6c49fe35c34f52b35387ce558bc7fa76' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 15.05.2024 @ 09:09
Script: /profile.php?userid=7&sid=def28ff1a8e89c2b7d9194889f4fa6cd
Referer: