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 ('8a684ec3bcdb2108a8057cb7cfe89fdd','0','3.137.217.41','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715613164','board.php?boardid=56&sid=82ddaac615c73cfd49294d12782728bd','0','0','')
mysql error: Duplicate entry '8a684ec3bcdb2108a8057cb7cfe89fdd' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 17:12
Script: /board.php?boardid=56&sid=82ddaac615c73cfd49294d12782728bd
Referer: