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 ('c3412914104ed3351b76466b25318fc7','0','18.191.157.186','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714741544','board.php?boardid=331&sid=4a58755596c41b89835f9c163d9a9026','0','0','')
mysql error: Duplicate entry 'c3412914104ed3351b76466b25318fc7' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 15:05
Script: /board.php?boardid=331&sid=4a58755596c41b89835f9c163d9a9026
Referer: http://wehrbauten.de/board.php?boardid=331&sid=4a58755596c41b89835f9c163d9a9026