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 ('6789a29c246f4f2b3d7527dcfdb1df82','0','18.118.82.212','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1745060463','thread.php?goto=lastpost&threadid=2242','0','0','')
mysql error: Duplicate entry '6789a29c246f4f2b3d7527dcfdb1df82' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 19.04.2025 @ 13:01
Script: /thread.php?goto=lastpost&threadid=2242
Referer: http://www.gttempel.de/thread.php?goto=firstnew_thread&threadid=2242