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 ('6295a0d97094f276366f8bf4f3c42411','0','18.226.187.199','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715556474','board.php?boardid=428&sid=73604cb4a3ee2feac7a1df0ae432e69f','0','0','')
mysql error: Duplicate entry '6295a0d97094f276366f8bf4f3c42411' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 01:27
Script: /board.php?boardid=428&sid=73604cb4a3ee2feac7a1df0ae432e69f
Referer: