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 ('57f746c4802ef3efd07ba00eb9208ef6','0','3.19.30.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714726991','board.php?boardid=4&sid=d33c14e5ef334d62e2fbf1dd108586c1','0','0','')
mysql error: Duplicate entry '57f746c4802ef3efd07ba00eb9208ef6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 03.05.2024 @ 11:03
Script: /board.php?boardid=4&sid=d33c14e5ef334d62e2fbf1dd108586c1
Referer: