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 ('aae87d888b5ca7a8b43cfab7b281631d','0','3.146.37.35','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714030081','thread.php?threadid=8086&sid=ac0068263e848c9ebb801b6d3a611eb3','0','0','')
mysql error: Duplicate entry 'aae87d888b5ca7a8b43cfab7b281631d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 25.04.2024 @ 09:28
Script: /thread.php?threadid=8086&sid=ac0068263e848c9ebb801b6d3a611eb3
Referer: