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 ('44640a648efab241373ff62ccc2a068f','0','3.145.191.214','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715564361','board.php?boardid=638&sid=79139fec6ef7a14af06a37142bf0deb0','0','0','')
mysql error: Duplicate entry '44640a648efab241373ff62ccc2a068f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 03:39
Script: /board.php?boardid=638&sid=79139fec6ef7a14af06a37142bf0deb0
Referer: