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 ('939bf0ca7d12b7495c19326d247dcb11','0','52.15.135.63','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715070054','board.php?boardid=187&sid=26f762538e31fbbb6842801c55fb658c','0','0','')
mysql error: Duplicate entry '939bf0ca7d12b7495c19326d247dcb11' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 10:20
Script: /board.php?boardid=187&sid=26f762538e31fbbb6842801c55fb658c
Referer: http://wehrbauten.de/board.php?boardid=187&sid=26f762538e31fbbb6842801c55fb658c