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 ('1bfd77a1105bb796f4012ec8b1e74260','0','18.116.51.117','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714638416','board.php?boardid=588&sid=c5afc2b50ecdd3ddcaa192d8e2513d17','0','0','')
mysql error: Duplicate entry '1bfd77a1105bb796f4012ec8b1e74260' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 02.05.2024 @ 10:26
Script: /board.php?boardid=588&sid=c5afc2b50ecdd3ddcaa192d8e2513d17
Referer: