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 ('7e4e79d74b65f157bd8f11fd0a219d51','0','3.142.173.227','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715356370','board.php?boardid=257&sid=2138d73c77546b5eb4de5199c02be61f','0','0','')
mysql error: Duplicate entry '7e4e79d74b65f157bd8f11fd0a219d51' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 17:52
Script: /board.php?boardid=257&sid=2138d73c77546b5eb4de5199c02be61f
Referer: http://wehrbauten.de/board.php?boardid=257&sid=2138d73c77546b5eb4de5199c02be61f