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 ('de268dc44e7ad806a648b821120c06f8','0','3.23.101.63','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716390731','profile.php?userid=10251&sid=a9afb889a74a1c4269e680a7f0691344','0','0','')
mysql error: Duplicate entry 'de268dc44e7ad806a648b821120c06f8' for key 1
mysql error number: 1062
mysql version: 4.1.22-standard
php version: 5.3.29-1+hw8
Date: 22.05.2024 @ 11:12
Script: /wbb2/profile.php?userid=10251&sid=a9afb889a74a1c4269e680a7f0691344
Referer: