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 ('57b64ebc1faea5750e66ceb17080afd1','0','18.188.175.182','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715171981','board.php?boardid=170&sid=0324a1e0e4c81cfe69ce79d6b677646b','0','0','')
mysql error: Duplicate entry '57b64ebc1faea5750e66ceb17080afd1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 14:39
Script: /board.php?boardid=170&sid=0324a1e0e4c81cfe69ce79d6b677646b
Referer: http://wehrbauten.de/board.php?boardid=170&sid=0324a1e0e4c81cfe69ce79d6b677646b