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 ('f9433d8ba0850e7c4609c6a28eacbdf9','0','18.222.67.251','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715155837','board.php?boardid=384&sid=e6133748875d6a1c1b199218017d0edf','0','0','')
mysql error: Duplicate entry 'f9433d8ba0850e7c4609c6a28eacbdf9' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 10:10
Script: /board.php?boardid=384&sid=e6133748875d6a1c1b199218017d0edf
Referer: