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 ('a7fae9feb8bf1e6b975a03d652590e7c','0','52.15.179.198','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745052577','usercp.php?action=addsubscription&threadid=49','0','0','')
mysql error: Duplicate entry 'a7fae9feb8bf1e6b975a03d652590e7c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.04.2025 @ 10:49
Script: /usercp.php?action=addsubscription&threadid=49
Referer: http://gttempel.de/usercp.php?action=addsubscription&threadid=49