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 ('6948f2233a0aac521a3613ee97c60138','0','3.129.247.196','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715103731','board.php?boardid=236&sid=64d9372710885799fb7197179707a60d','0','0','')
mysql error: Duplicate entry '6948f2233a0aac521a3613ee97c60138' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 19:42
Script: /board.php?boardid=236&sid=64d9372710885799fb7197179707a60d
Referer: http://wehrbauten.de/board.php?boardid=236&sid=64d9372710885799fb7197179707a60d