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 ('8e77cf341f3ba16459d9ad9ef0b13984','0','18.118.165.24','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715773318','board.php?boardid=446&sid=52f5f87bf7d748b389a8b62d6ea3f2f5','0','0','')
mysql error: Duplicate entry '8e77cf341f3ba16459d9ad9ef0b13984' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 13:41
Script: /board.php?boardid=446&sid=52f5f87bf7d748b389a8b62d6ea3f2f5
Referer: http://wehrbauten.de/board.php?boardid=446&sid=52f5f87bf7d748b389a8b62d6ea3f2f5