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 ('cfb251557ae02592493c2d842f3aa7df','0','18.116.239.195','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714695924','board.php?boardid=17&daysprune=1000&sortfield=lastposttime&sortorder=DESC&page=5&sid=c0fd48035fcf7e2379682b7b6b9a5d82','0','0','')
mysql error: Duplicate entry 'cfb251557ae02592493c2d842f3aa7df' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 03.05.2024 @ 02:25
Script: /board.php?boardid=17&daysprune=1000&sortfield=lastposttime&sortorder=DESC&page=5&sid=c0fd48035fcf7e2379682b7b6b9a5d82
Referer: