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 ('46cc406f3ae74a3aa0a19dacdfd47c4a','0','3.12.151.153','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716364478','profile.php?userid=9778&sid=9c6b114357d785f916075f144e76482b','0','0','')
mysql error: Duplicate entry '46cc406f3ae74a3aa0a19dacdfd47c4a' for key 1
mysql error number: 1062
mysql version: 4.1.22-standard
php version: 5.3.29-1+hw8
Date: 22.05.2024 @ 03:54
Script: /danielamos/wbb2/profile.php?userid=9778&sid=9c6b114357d785f916075f144e76482b
Referer: