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 ('03fecb12ffe43de03d453c20ff1dc43a','0','3.145.78.155','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715784477','board.php?boardid=339&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=12dfba917344f6cbe2969ccc8e55969a','0','0','')
mysql error: Duplicate entry '03fecb12ffe43de03d453c20ff1dc43a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 16:47
Script: /board.php?boardid=339&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=12dfba917344f6cbe2969ccc8e55969a
Referer: