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 ('2ff4fb51cafc64603362aaa5e0cff29f','0','3.131.38.219','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715570577','search.php?sid=3e05ac162db2c7f230671e467aeba029','0','0','')
mysql error: Duplicate entry '2ff4fb51cafc64603362aaa5e0cff29f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 05:22
Script: /search.php?sid=3e05ac162db2c7f230671e467aeba029
Referer: