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 ('6b6764d70a81ca8cb97ddf7ea073de1d','0','3.144.189.177','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715220702','newthread.php?boardid=625&sid=25f14ded9d6511e63711776ae97a7135','0','0','')
mysql error: Duplicate entry '6b6764d70a81ca8cb97ddf7ea073de1d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 09.05.2024 @ 04:11
Script: /newthread.php?boardid=625&sid=25f14ded9d6511e63711776ae97a7135
Referer: http://wehrbauten.de/newthread.php?boardid=625&sid=25f14ded9d6511e63711776ae97a7135