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 ('cbf63d91a79aa6a7fc41af25fc2c2ced','0','216.73.216.127','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1752352862','ct_mail.php?Page=46533966','0','0','')
mysql error: Duplicate entry 'cbf63d91a79aa6a7fc41af25fc2c2ced' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 12.07.2025 @ 22:41
Script: /ct_mail.php?Page=46533966
Referer: