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 ('b76c3c1ef0088ea40e561942ca1e7e51','0','216.73.216.162','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752011921','addreply.php?action=quote&postid=18456','0','0','')
mysql error: Duplicate entry 'b76c3c1ef0088ea40e561942ca1e7e51' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 08.07.2025 @ 23:58
Script: /addreply.php?action=quote&postid=18456
Referer: