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 ('dc7b643e7c370c7c10ffec64f76f4c39','0','3.135.219.166','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715353464','board.php?boardid=52&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=fa41896a4b2e52c62bd93f762add7008','0','0','')
mysql error: Duplicate entry 'dc7b643e7c370c7c10ffec64f76f4c39' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 17:04
Script: /board.php?boardid=52&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=fa41896a4b2e52c62bd93f762add7008
Referer: http://wehrbauten.de/board.php?boardid=52&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=fa41896a4b2e52c62bd93f762add7008