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 ('3a115f9a64e83c1014e4b34450c02691','0','3.145.102.249','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716359776','memberslist.php?sid=81a2be1748aeaf744a2e224ee6540f5e','0','0','')
mysql error: Duplicate entry '3a115f9a64e83c1014e4b34450c02691' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 22.05.2024 @ 08:36
Script: /memberslist.php?sid=81a2be1748aeaf744a2e224ee6540f5e
Referer: