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 ('df899ae705c5f2058c23e36cbd06721f','0','18.117.83.62','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745223731','usercp.php?action=addsubscription&threadid=2447','0','0','')
mysql error: Duplicate entry 'df899ae705c5f2058c23e36cbd06721f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 21.04.2025 @ 10:22
Script: /usercp.php?action=addsubscription&threadid=2447
Referer: http://gttempel.de/usercp.php?action=addsubscription&threadid=2447