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 ('312cab3c87bc912f087723a7ab9ebbf0','0','18.188.115.118','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715553200','board.php?boardid=341&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=944d3086f37089feb6a13da1d586186a','0','0','')
mysql error: Duplicate entry '312cab3c87bc912f087723a7ab9ebbf0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 00:33
Script: /board.php?boardid=341&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=944d3086f37089feb6a13da1d586186a
Referer: http://wehrbauten.de/board.php?boardid=341&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=944d3086f37089feb6a13da1d586186a