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 ('2d8df44ae7a9ed88be9656742d03da20','0','3.139.82.23','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715035493','board.php?boardid=624&sid=d6d8dbbd955b0965e1b4f51d3fbe94ca','0','0','')
mysql error: Duplicate entry '2d8df44ae7a9ed88be9656742d03da20' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 00:44
Script: /board.php?boardid=624&sid=d6d8dbbd955b0965e1b4f51d3fbe94ca
Referer: http://wehrbauten.de/board.php?boardid=624&sid=d6d8dbbd955b0965e1b4f51d3fbe94ca