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 ('c4cf7ceb1a01622039cdd40db425ea61','0','3.16.47.72','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744948578','markread.php?boardid=106','0','0','')
mysql error: Duplicate entry 'c4cf7ceb1a01622039cdd40db425ea61' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 18.04.2025 @ 05:56
Script: /markread.php?boardid=106
Referer: http://gttempel.de/markread.php?boardid=106