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 ('d669d4d37ee837242524257d5b9e8064','0','18.218.117.12','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1737780294','ct_mail.php?Page=75303352','0','0','')
mysql error: Duplicate entry 'd669d4d37ee837242524257d5b9e8064' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.33-0ubuntu0.16.04.1
php version: 5.6.40
Date: 25.01.2025 @ 05:44
Script: /ct_mail.php?Page=75303352
Referer: