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 ('401d64516e6ebe020d4d761b5ef6fbaf','0','3.138.138.144','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715014534','board.php?boardid=51&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=75e5769e364512be97ef6025c9d8a87c','0','0','')
mysql error: Duplicate entry '401d64516e6ebe020d4d761b5ef6fbaf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 18:55
Script: /board.php?boardid=51&page=1&daysprune=1000&sortfield=vote&sortorder=ASC&sid=75e5769e364512be97ef6025c9d8a87c
Referer: