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 ('5198b471fa7874a8c91119dbc2936c9d','0','18.188.190.28','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745317095','usercp.php?action=addsubscription&threadid=591','0','0','')
mysql error: Duplicate entry '5198b471fa7874a8c91119dbc2936c9d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 12:18
Script: /usercp.php?action=addsubscription&threadid=591
Referer: http://gttempel.de/usercp.php?action=addsubscription&threadid=591