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 ('8890f6fc3c2b6ee97ee2910005c8de6a','0','3.16.54.63','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715158569','board.php?boardid=719&sid=49d5c038946365dba54fed274e3b218d','0','0','')
mysql error: Duplicate entry '8890f6fc3c2b6ee97ee2910005c8de6a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 10:56
Script: /board.php?boardid=719&sid=49d5c038946365dba54fed274e3b218d
Referer: http://wehrbauten.de/board.php?boardid=719&sid=49d5c038946365dba54fed274e3b218d