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 ('340c406a9bd0d11d9e97c00126d57ba6','0','18.118.119.229','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715522570','board.php?boardid=55&sid=030dac9c40436346d5bca53fbcc0ddd7','0','0','')
mysql error: Duplicate entry '340c406a9bd0d11d9e97c00126d57ba6' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 12.05.2024 @ 16:02
Script: /board.php?boardid=55&sid=030dac9c40436346d5bca53fbcc0ddd7
Referer: http://wehrbauten.de/board.php?boardid=55&sid=030dac9c40436346d5bca53fbcc0ddd7