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 ('fde5a41408961b24d8c5a3a70e712f62','0','3.144.98.13','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714610139','board.php?boardid=270&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=d4ead7784263c28ec2401cde0a7b6713','0','0','')
mysql error: Duplicate entry 'fde5a41408961b24d8c5a3a70e712f62' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 02:35
Script: /board.php?boardid=270&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=d4ead7784263c28ec2401cde0a7b6713
Referer: http://wehrbauten.de/board.php?boardid=270&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=d4ead7784263c28ec2401cde0a7b6713