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 ('52487f8200d72b8cac1ebbe4b5eb13c2','0','18.224.95.38','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715185598','board.php?boardid=633&sid=8393b8980eb87f5d98e6767deb7232ad','0','0','')
mysql error: Duplicate entry '52487f8200d72b8cac1ebbe4b5eb13c2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 08.05.2024 @ 18:26
Script: /board.php?boardid=633&sid=8393b8980eb87f5d98e6767deb7232ad
Referer: http://wehrbauten.de/board.php?boardid=633&sid=8393b8980eb87f5d98e6767deb7232ad