SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('c4f97dc37b5f1da372be4ff73870b35e','0','52.14.182.155','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744799913','thread.php?goto=nextoldest&threadid=1418','0','0','')
mysql error: Duplicate entry 'c4f97dc37b5f1da372be4ff73870b35e' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 16.04.2025 @ 12:38
Script: /thread.php?goto=nextoldest&threadid=1418
Referer: http://gttempel.de/thread.php?goto=nextoldest&threadid=1418