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 ('85448c994c9f7f433f0298863c1e6621','0','18.221.222.47','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715181197','board.php?boardid=264&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=18ea1d975af100077237e2ba2b1d7dde','0','0','')
mysql error: Duplicate entry '85448c994c9f7f433f0298863c1e6621' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 17:13
Script: /board.php?boardid=264&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=18ea1d975af100077237e2ba2b1d7dde
Referer: http://wehrbauten.de/board.php?boardid=264&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=18ea1d975af100077237e2ba2b1d7dde