SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('6804a4352b38c8a71a8b0c1da7627a4e','0','18.216.64.93','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745058790','usercp.php?action=addsubscription&threadid=2084','0','0','')
mysql error: Duplicate entry '6804a4352b38c8a71a8b0c1da7627a4e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.04.2025 @ 12:33
Script: /usercp.php?action=addsubscription&threadid=2084
Referer: http://gttempel.de/usercp.php?action=addsubscription&threadid=2084