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 ('9e87574bdb76eaf077a31d9706d80f67','0','18.118.193.232','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714978784','board.php?boardid=68&sid=e3815cf17c3b22e13964e19670d3adda','0','0','')
mysql error: Duplicate entry '9e87574bdb76eaf077a31d9706d80f67' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 08:59
Script: /board.php?boardid=68&sid=e3815cf17c3b22e13964e19670d3adda
Referer: http://wehrbauten.de/board.php?boardid=68&sid=e3815cf17c3b22e13964e19670d3adda