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 ('60520747550d7410d3f1c1de36bf8ed1','0','3.137.172.68','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714024965','lehrerfoto.php?sid=87aca0c9b539aa2c9490764216037653','0','0','')
mysql error: Duplicate entry '60520747550d7410d3f1c1de36bf8ed1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.19-MariaDB-0+deb11u2
php version: 5.6.40
Date: 25.04.2024 @ 08:02
Script: /schule/lehrerfoto.php?sid=87aca0c9b539aa2c9490764216037653
Referer: