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 ('39e3c9749ec97885348e819add3381e2','0','18.216.239.46','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715331919','board.php?boardid=38&sid=64e872deccb82cfe335de48d593793e1','0','0','')
mysql error: Duplicate entry '39e3c9749ec97885348e819add3381e2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 11:05
Script: /board.php?boardid=38&sid=64e872deccb82cfe335de48d593793e1
Referer: http://wehrbauten.de/board.php?boardid=38&sid=64e872deccb82cfe335de48d593793e1