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 ('cd9a9fa3d5d2867d675da7384e28dad3','0','18.227.190.93','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715279150','board.php?boardid=274&sid=e4976e66d8869c41d7e3af9461823e4f','0','0','')
mysql error: Duplicate entry 'cd9a9fa3d5d2867d675da7384e28dad3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 20:25
Script: /board.php?boardid=274&sid=e4976e66d8869c41d7e3af9461823e4f
Referer: