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 ('5b9c3309ab8546c5c9467fc64e4f14f8','0','216.73.216.151','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1749187588','thread.php?postid=28484','0','0','')
mysql error: Duplicate entry '5b9c3309ab8546c5c9467fc64e4f14f8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 06.06.2025 @ 07:26
Script: /thread.php?postid=28484
Referer: