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 ('986b81f629e7f38605d08ecfdbd37ac2','0','52.14.224.197','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1713569015','thread.php?goto=lastpost&threadid=1489&sid=d03216366832182777570ca980c77616','0','0','')
mysql error: Duplicate entry '986b81f629e7f38605d08ecfdbd37ac2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 20.04.2024 @ 01:23
Script: /thread.php?goto=lastpost&threadid=1489&sid=d03216366832182777570ca980c77616
Referer: http://wehrbauten.de/thread.php?goto=lastpost&threadid=1489&sid=d03216366832182777570ca980c77616