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 ('39556e4109f07801ab617612ae7baf94','0','18.223.106.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714888411','thread.php?goto=lastpost&threadid=2034&sid=af0f4c0f09bd5eca8333c5de2dfd3dae','0','0','')
mysql error: Duplicate entry '39556e4109f07801ab617612ae7baf94' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 05.05.2024 @ 07:53
Script: /thread.php?goto=lastpost&threadid=2034&sid=af0f4c0f09bd5eca8333c5de2dfd3dae
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=2034&sid=af0f4c0f09bd5eca8333c5de2dfd3dae