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 ('39ebc2651b096799a31c5271569bbc09','0','3.17.74.153','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714386755','board.php?boardid=154&sid=e386ddeb5753a956f1182ce42dd67562','0','0','')
mysql error: Duplicate entry '39ebc2651b096799a31c5271569bbc09' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 29.04.2024 @ 12:32
Script: /board.php?boardid=154&sid=e386ddeb5753a956f1182ce42dd67562
Referer: http://wehrbauten.de/board.php?boardid=154&sid=e386ddeb5753a956f1182ce42dd67562