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 ('bef1778ec61c80590b1abd6cca50372c','0','18.189.178.65','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716187295','addreply.php?postid=84847&sid=637cd025d3f7559ed53c81977bfb9f55','0','0','')
mysql error: Duplicate entry 'bef1778ec61c80590b1abd6cca50372c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 20.05.2024 @ 08:41
Script: /addreply.php?postid=84847&sid=637cd025d3f7559ed53c81977bfb9f55
Referer: