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 ('13c4ffb90d7631450edeb57aa21a810d','0','3.16.69.1','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715870225','addreply.php?action=quote&postid=2185&sid=ad6b55d6ace30b152b24a36a4a874e6e','0','0','')
mysql error: Duplicate entry '13c4ffb90d7631450edeb57aa21a810d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 16.05.2024 @ 16:37
Script: /addreply.php?action=quote&postid=2185&sid=ad6b55d6ace30b152b24a36a4a874e6e
Referer: http://wehrbauten.de/addreply.php?action=quote&postid=2185&sid=ad6b55d6ace30b152b24a36a4a874e6e