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 ('9a7591deee5ed9e52ea5c6201cf4041c','0','18.119.104.238','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715199164','board.php?boardid=104&sid=d6221ad0b13a5cd63fc3ce13058152eb','0','0','')
mysql error: Duplicate entry '9a7591deee5ed9e52ea5c6201cf4041c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 22:12
Script: /board.php?boardid=104&sid=d6221ad0b13a5cd63fc3ce13058152eb
Referer: