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 ('1ae9bb9e53ff869a5e489500ccc0ec34','0','3.12.71.146','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715037085','board.php?boardid=699&sid=a0237ed0a4ad73d9851bc0786028cbfb','0','0','')
mysql error: Duplicate entry '1ae9bb9e53ff869a5e489500ccc0ec34' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 07.05.2024 @ 01:11
Script: /board.php?boardid=699&sid=a0237ed0a4ad73d9851bc0786028cbfb
Referer: http://wehrbauten.de/board.php?boardid=699&sid=a0237ed0a4ad73d9851bc0786028cbfb