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 ('eb4f400fb295c68e827484ba9759e09c','0','3.144.187.103','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714010367','board.php?boardid=531&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=dce905026278a2d7c4fbcf5b7737c5e5','0','0','')
mysql error: Duplicate entry 'eb4f400fb295c68e827484ba9759e09c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 25.04.2024 @ 03:59
Script: /board.php?boardid=531&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=dce905026278a2d7c4fbcf5b7737c5e5
Referer: http://wehrbauten.de/board.php?boardid=531&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=dce905026278a2d7c4fbcf5b7737c5e5