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 ('bf95aa5336498f2910841f049304a92f','0','3.135.198.7','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715609365','thread.php?postid=1580&sid=c2fb6dff8992b38152b207bece83ec69','0','0','')
mysql error: Duplicate entry 'bf95aa5336498f2910841f049304a92f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 16:09
Script: /thread.php?postid=1580&sid=c2fb6dff8992b38152b207bece83ec69
Referer: http://www.wehrbauten.de/thread.php?goto=lastpost&threadid=697&sid=f1672bdfabed6f2d1bb856dbb4168346