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 ('77e76fc7a296d48ce9a70fcc47a70aa8','0','3.19.55.116','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715583243','board.php?boardid=16&daysprune=1000&sortfield=vote&sortorder=ASC&sid=eb8155dbc370d67bcf2594b400fe43dd','0','0','')
mysql error: Duplicate entry '77e76fc7a296d48ce9a70fcc47a70aa8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.6.15-MariaDB-cll-lve-log
php version: 5.6.40
Date: 13.05.2024 @ 06:54
Script: /board.php?boardid=16&daysprune=1000&sortfield=vote&sortorder=ASC&sid=eb8155dbc370d67bcf2594b400fe43dd
Referer: