SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('6a958884c03f1fe74faae574ac394849','0','18.220.79.202','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716120621','thread.php?threadid=595&sid=b0eb16d5267fbda83256d46d788c4156','0','0','')
mysql error: Duplicate entry '6a958884c03f1fe74faae574ac394849' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 19.05.2024 @ 14:10
Script: /thread.php?threadid=595&sid=b0eb16d5267fbda83256d46d788c4156
Referer: http://wehrbauten.de/thread.php?threadid=595&sid=b0eb16d5267fbda83256d46d788c4156