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 ('645660e3c501012e7f9160d8a9461339','0','18.226.214.84','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715833128','jgs_portal_links.php?kat_id=1&sid=6d8ce0ef3c77be7619d4d7b81ca55d42','0','0','')
mysql error: Duplicate entry '645660e3c501012e7f9160d8a9461339' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.33-0ubuntu0.16.04.1
php version: 5.6.40
Date: 16.05.2024 @ 06:18
Script: /jgs_portal_links.php?kat_id=1&sid=6d8ce0ef3c77be7619d4d7b81ca55d42
Referer: