SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('f8911a0f8b8ea445899085e3f19651e9','0','3.15.174.76','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714662013','board.php?boardid=33231&sid=a9017153675c4ec6dbfd5af2f8058439','0','0','')
mysql error: Duplicate entry 'f8911a0f8b8ea445899085e3f19651e9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.23-MariaDB-0+deb11u1
php version: 5.6.40
Date: 02.05.2024 @ 17:00
Script: /board.php?boardid=33231&sid=a9017153675c4ec6dbfd5af2f8058439
Referer: http://mainboard.ppg-clan.de/board.php?boardid=33231&sid=a9017153675c4ec6dbfd5af2f8058439