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 ('64a6b8ad6d2a1b5d6fda553c1590c4c6','0','3.138.156.60','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716358508','profile.php?userid=3026&sid=c317ef2b0a025a5c29e2f48377f4372c','0','0','')
mysql error: Duplicate entry '64a6b8ad6d2a1b5d6fda553c1590c4c6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-cll-lve-log
php version: 5.6.40
Date: 22.05.2024 @ 06:15
Script: /profile.php?userid=3026&sid=c317ef2b0a025a5c29e2f48377f4372c
Referer: http://www.biker-community.com/profile.php?userid=3026&sid=c317ef2b0a025a5c29e2f48377f4372c