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 ('5a4fa97635cfdbe07f545a9d470b206c','0','3.145.204.101','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745352153','thread.php?goto=lastpost&threadid=883','0','0','')
mysql error: Duplicate entry '5a4fa97635cfdbe07f545a9d470b206c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 22.04.2025 @ 22:02
Script: /thread.php?goto=lastpost&threadid=883
Referer: http://www.gttempel.de/thread.php?goto=firstnew_thread&threadid=883