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 ('acf32992dd26bf295b74597cafda79f7','0','3.145.186.6','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714896272','board.php?boardid=597&sid=488f0c82d0359ee34cdca72aac5fd32f','0','0','')
mysql error: Duplicate entry 'acf32992dd26bf295b74597cafda79f7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 10:04
Script: /board.php?boardid=597&sid=488f0c82d0359ee34cdca72aac5fd32f
Referer: http://wehrbauten.de/board.php?boardid=597&sid=488f0c82d0359ee34cdca72aac5fd32f