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 ('fb4ebaba79d249b530f877351a769d5a','0','3.143.4.181','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716621048','misc.php?action=imprint&sid=f55a31b50f571d352ca2ee1d9ddf0f91','0','0','')
mysql error: Duplicate entry 'fb4ebaba79d249b530f877351a769d5a' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 25.05.2024 @ 09:10
Script: /misc.php?action=imprint&sid=f55a31b50f571d352ca2ee1d9ddf0f91
Referer: