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 ('de80d0466ffb11d50eb6d90d8e1fe963','0','3.144.240.61','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715643476','board.php?boardid=534&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=abcc8e21a855a002a23beb0344c455be','0','0','')
mysql error: Duplicate entry 'de80d0466ffb11d50eb6d90d8e1fe963' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 01:37
Script: /board.php?boardid=534&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=abcc8e21a855a002a23beb0344c455be
Referer: http://wehrbauten.de/board.php?boardid=534&page=1&daysprune=1000&sortfield=topic&sortorder=ASC&sid=abcc8e21a855a002a23beb0344c455be