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 ('b409f660c06ffca411b9474e9d8ae06e','0','3.145.89.60','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715649215','board.php?boardid=84&sid=95765b5e76b8e034bfa9c01cd5798e76','0','0','')
mysql error: Duplicate entry 'b409f660c06ffca411b9474e9d8ae06e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 03:13
Script: /board.php?boardid=84&sid=95765b5e76b8e034bfa9c01cd5798e76
Referer: