SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('bf9b96f41c4a935fd8a81e4454afa15b','0','18.218.86.208','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716366501','board.php?boardid=33&sid=a5b5908b72749b5f69ea62fe546f57e5','0','0','')
mysql error: Duplicate entry 'bf9b96f41c4a935fd8a81e4454afa15b' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.1.48-MariaDB-0ubuntu0.18.04.1
php version: 7.4.33
Date: 22.05.2024 @ 10:28
Script: /board.php?boardid=33&sid=a5b5908b72749b5f69ea62fe546f57e5
Referer: http://www.karpfen-spezial.de/board.php?boardid=33&sid=a5b5908b72749b5f69ea62fe546f57e5