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 ('b6390c76af06008f51c228401479564e','0','3.128.171.246','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715519823','board.php?boardid=189&sid=d4e0477b1d549c752539efce2f7f34bd','0','0','')
mysql error: Duplicate entry 'b6390c76af06008f51c228401479564e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 15:17
Script: /board.php?boardid=189&sid=d4e0477b1d549c752539efce2f7f34bd
Referer: