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 ('a5c84b6704ed478961c4df79d8ebb1a7','0','216.73.216.122','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1754741041','ct_mail.php?Page=568641550','0','0','')
mysql error: Duplicate entry 'a5c84b6704ed478961c4df79d8ebb1a7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 09.08.2025 @ 14:04
Script: /ct_mail.php?Page=568641550
Referer: