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 ('1c2b813959a4b89cbbe9de3ecf1c1bfe','0','3.17.79.60','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714234148','board.php?boardid=2&sid=01a9a6c7c866e18766aeb774d41a3119','0','0','')
mysql error: Duplicate entry '1c2b813959a4b89cbbe9de3ecf1c1bfe' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.19-MariaDB-0+deb11u2
php version: 5.6.40
Date: 27.04.2024 @ 18:09
Script: /schule/board.php?boardid=2&sid=01a9a6c7c866e18766aeb774d41a3119
Referer: