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 ('5661d294a8ca7045a62533034bcfb0b0','0','216.73.216.220','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1759211257','addreply.php?postid=53348','0','0','')
mysql error: Duplicate entry '5661d294a8ca7045a62533034bcfb0b0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 30.09.2025 @ 07:47
Script: /addreply.php?postid=53348
Referer: