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 ('60a7f513803f5b4dd8cc5f08408fb0f3','0','3.141.41.187','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714799168','board.php?boardid=143&sid=5189dc237216e2389352ce88e75b5c06','0','0','')
mysql error: Duplicate entry '60a7f513803f5b4dd8cc5f08408fb0f3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 07:06
Script: /board.php?boardid=143&sid=5189dc237216e2389352ce88e75b5c06
Referer: http://wehrbauten.de/board.php?boardid=143&sid=5189dc237216e2389352ce88e75b5c06