SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('cddedb0b416b32748be542df04bdad04','0','18.221.13.173','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714120576','board.php?boardid=428&sid=fca7d43a15d5945f10587ffae25a1fc3','0','0','')
mysql error: Duplicate entry 'cddedb0b416b32748be542df04bdad04' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 26.04.2024 @ 10:36
Script: /board.php?boardid=428&sid=fca7d43a15d5945f10587ffae25a1fc3
Referer: http://wehrbauten.de/board.php?boardid=428&sid=fca7d43a15d5945f10587ffae25a1fc3