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 ('1a2bfbfd94a9206dd35d59a05c04f035','0','3.137.188.11','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714832368','thread.php?goto=lastpost&threadid=2417&sid=96c14ba2fb7401793b9799f61958c320','0','0','')
mysql error: Duplicate entry '1a2bfbfd94a9206dd35d59a05c04f035' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 16:19
Script: /thread.php?goto=lastpost&threadid=2417&sid=96c14ba2fb7401793b9799f61958c320
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2417&sid=96c14ba2fb7401793b9799f61958c320