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 ('9259dbba08d1e98fceb716a4a74e6ee0','0','18.188.40.207','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714261585','board.php?boardid=78&sid=9f4466d39546a73416fca61cfe14c5a8','0','0','')
mysql error: Duplicate entry '9259dbba08d1e98fceb716a4a74e6ee0' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 28.04.2024 @ 01:46
Script: /board.php?boardid=78&sid=9f4466d39546a73416fca61cfe14c5a8
Referer: http://wehrbauten.de/board.php?boardid=78&sid=9f4466d39546a73416fca61cfe14c5a8