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 ('b2f4d404c1c672ccf12e5889cfedf5cd','0','18.117.230.81','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1727486661','thread.php?goto=nextoldest&threadid=1223','0','0','')
mysql error: Duplicate entry 'b2f4d404c1c672ccf12e5889cfedf5cd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 28.09.2024 @ 03:24
Script: /thread.php?goto=nextoldest&threadid=1223
Referer: http://gttempel.de/thread.php?goto=nextoldest&threadid=1223