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 ('4991253bf4d82467dcf58ef1a797299c','0','18.188.171.44','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744859353','usercp.php?action=buddy&add=4','0','0','')
mysql error: Duplicate entry '4991253bf4d82467dcf58ef1a797299c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 17.04.2025 @ 05:09
Script: /usercp.php?action=buddy&add=4
Referer: http://gttempel.de/usercp.php?action=buddy&add=4