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 ('de0ec513b3b12e15680ef71558b89fe3','0','18.220.16.184','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714991326','board.php?boardid=254&sid=280786f14fd122a900158f4824dc92f0','0','0','')
mysql error: Duplicate entry 'de0ec513b3b12e15680ef71558b89fe3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 12:28
Script: /board.php?boardid=254&sid=280786f14fd122a900158f4824dc92f0
Referer: http://wehrbauten.de/board.php?boardid=254&sid=280786f14fd122a900158f4824dc92f0