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 ('27c4db2cb3b39978b882090a2b08debf','0','13.59.10.239','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715585339','addreply.php?threadid=553&sid=d3581598519f4e5a032998759d0ec772','0','0','')
mysql error: Duplicate entry '27c4db2cb3b39978b882090a2b08debf' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 09:28
Script: /addreply.php?threadid=553&sid=d3581598519f4e5a032998759d0ec772
Referer: http://wehrbauten.de/addreply.php?threadid=553&sid=d3581598519f4e5a032998759d0ec772