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 ('c81d49a43979b8fae18f4c6528145cd5','0','216.73.216.208','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1748981087','addreply.php?action=quote&postid=38602','0','0','')
mysql error: Duplicate entry 'c81d49a43979b8fae18f4c6528145cd5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 03.06.2025 @ 22:04
Script: /addreply.php?action=quote&postid=38602
Referer: