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 ('68ec26eacfa7fa48b7566022cb4f2927','0','3.129.249.141','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716371878','addreply.php?action=quote&postid=181636&sid=767139cc891d55c4b6848e4962d5149e','0','0','')
mysql error: Duplicate entry '68ec26eacfa7fa48b7566022cb4f2927' for key 1
mysql error number: 1062
mysql version: 4.1.22-standard
php version: 5.3.29-1+hw8
Date: 22.05.2024 @ 05:57
Script: /wbb2/addreply.php?action=quote&postid=181636&sid=767139cc891d55c4b6848e4962d5149e
Referer: