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 ('271f63582f3bbd545d1b839cfe68e9a8','0','3.142.135.4','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715453376','board.php?boardid=263&sid=3937e9bd67f6ce86f894e2a298d7c58d','0','0','')
mysql error: Duplicate entry '271f63582f3bbd545d1b839cfe68e9a8' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 20:49
Script: /board.php?boardid=263&sid=3937e9bd67f6ce86f894e2a298d7c58d
Referer: