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 ('3fbbf09ae6dbf322627bb7dd10e216e1','0','3.144.93.73','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715527027','board.php?boardid=261&sid=7b6f72cce99f14a14224c8ceb99c5978','0','0','')
mysql error: Duplicate entry '3fbbf09ae6dbf322627bb7dd10e216e1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 17:17
Script: /board.php?boardid=261&sid=7b6f72cce99f14a14224c8ceb99c5978
Referer: