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 ('6c009e7e806804e793db25beac534e5f','0','3.138.172.82','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715882754','board.php?boardid=7&sid=991af2ff89dcd2ebbc773858de368251','0','0','')
mysql error: Duplicate entry '6c009e7e806804e793db25beac534e5f' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 4.4.9
Date: 16.05.2024 @ 20:05
Script: /Forum/board.php?boardid=7&sid=991af2ff89dcd2ebbc773858de368251
Referer: