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 ('35ed98f1f1b26c9de512421e3b8ca8e2','0','216.73.216.241','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1750663252','addreply.php?postid=28126','0','0','')
mysql error: Duplicate entry '35ed98f1f1b26c9de512421e3b8ca8e2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 23.06.2025 @ 09:20
Script: /addreply.php?postid=28126
Referer: