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 ('00254af7a57cafec9ba3c30cdbed459d','0','18.189.171.86','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715889760','newthread.php?boardid=35&sid=f4cd7e5259edb27606080f137d43f7e4','0','0','')
mysql error: Duplicate entry '00254af7a57cafec9ba3c30cdbed459d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 16.05.2024 @ 22:02
Script: /newthread.php?boardid=35&sid=f4cd7e5259edb27606080f137d43f7e4
Referer: