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 ('47fd99016e5e51ac85d9e5697c2ed0d9','0','216.73.216.114','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1755297661','ct_mail.php?Page=971832681','0','0','')
mysql error: Duplicate entry '47fd99016e5e51ac85d9e5697c2ed0d9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 16.08.2025 @ 00:41
Script: /ct_mail.php?Page=971832681
Referer: