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 ('53646901e751fbb6980eedcbbcbf37ff','0','18.188.196.223','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715754160','thread.php?goto=lastpost&threadid=697&sid=cd5c0cbee5def824db40f18a6d48b3ce','0','0','')
mysql error: Duplicate entry '53646901e751fbb6980eedcbbcbf37ff' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 08:22
Script: /thread.php?goto=lastpost&threadid=697&sid=cd5c0cbee5def824db40f18a6d48b3ce
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=697&sid=cd5c0cbee5def824db40f18a6d48b3ce