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 ('6ec1cffd396d92e80eff3bb1c2d8d5b4','0','18.117.229.13','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1744863816','board.php?boardid=90','0','0','')
mysql error: Duplicate entry '6ec1cffd396d92e80eff3bb1c2d8d5b4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 8.0.11
php version: 5.6.10
Date: 17.04.2025 @ 06:23
Script: /board.php?boardid=90
Referer: http://www.gttempel.de/markread.php?boardid=90