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 ('4a357c5facedfba1a6879c94893dd8f1','0','3.15.18.207','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1717241715','thread.php?postid=36922','0','0','')
mysql error: Duplicate entry '4a357c5facedfba1a6879c94893dd8f1' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 01.06.2024 @ 13:35
Script: /thread.php?postid=36922
Referer: http://www.gttempel.at/thread.php?postid=36922