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 ('258acf8970c289433ef8957f03ce4936','0','18.188.115.118','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715589886','newthread.php?boardid=437&sid=f67b2444a1277273656c2f69e42cdc2d','0','0','')
mysql error: Duplicate entry '258acf8970c289433ef8957f03ce4936' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 10:44
Script: /newthread.php?boardid=437&sid=f67b2444a1277273656c2f69e42cdc2d
Referer: http://wehrbauten.de/newthread.php?boardid=437&sid=f67b2444a1277273656c2f69e42cdc2d