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 ('257d61d2a557ca719511c08c94185717','0','3.16.76.43','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715380702','board.php?boardid=354&sid=49334399ed9f8b57518c81f8f0fbfd67','0','0','')
mysql error: Duplicate entry '257d61d2a557ca719511c08c94185717' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 00:38
Script: /board.php?boardid=354&sid=49334399ed9f8b57518c81f8f0fbfd67
Referer: http://wehrbauten.de/board.php?boardid=354&sid=49334399ed9f8b57518c81f8f0fbfd67