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 ('dbf154dc4c2c60236ca7a3c1eee5b1bd','0','216.73.216.142','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1758532202','ct_mail.php?Page=488191016','0','0','')
mysql error: Duplicate entry 'dbf154dc4c2c60236ca7a3c1eee5b1bd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 22.09.2025 @ 11:10
Script: /ct_mail.php?Page=488191016
Referer: