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 ('9e35031f6422f9a703343b229f7c3bd6','0','18.222.231.86','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745322201','usercp.php?action=addsubscription&threadid=1858','0','0','')
mysql error: Duplicate entry '9e35031f6422f9a703343b229f7c3bd6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 13:43
Script: /usercp.php?action=addsubscription&threadid=1858
Referer: http://gttempel.de/usercp.php?action=addsubscription&threadid=1858