SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb2_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('94f6e5966cdb1754d11f39541f42572e','0','18.118.45.162','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714734604','profile.php?userid=6677&sid=adf536cab948c628cd8ea2e976560327','0','0','')
mysql error: Duplicate entry '94f6e5966cdb1754d11f39541f42572e' for key 1
mysql error number: 1062
mysql version: 4.1.22-standard
php version: 5.3.29-1+hw8
Date: 03.05.2024 @ 07:10
Script: /wbb2/profile.php?userid=6677&sid=adf536cab948c628cd8ea2e976560327
Referer: