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 ('81bb934eb744f55c3e7a0a512adf6ac9','0','216.73.216.222','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752355404','thread.php?postid=32014','0','0','')
mysql error: Duplicate entry '81bb934eb744f55c3e7a0a512adf6ac9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 12.07.2025 @ 23:23
Script: /thread.php?postid=32014
Referer: