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 ('b747538420f4d6bf33abf9573e1e5629','0','3.21.104.201','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714797694','thread.php?threadid=664&sid=82257b7de0e416202ad7a5842300df9c','0','0','')
mysql error: Duplicate entry 'b747538420f4d6bf33abf9573e1e5629' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 06:41
Script: /thread.php?threadid=664&sid=82257b7de0e416202ad7a5842300df9c
Referer: