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 ('9ce14bf71a506ebdc113204dc241d5f5','0','3.15.235.104','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715376848','board.php?boardid=450&sid=d69ea9b45b5393d3a64c23a41eaadf8b','0','0','')
mysql error: Duplicate entry '9ce14bf71a506ebdc113204dc241d5f5' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 10.05.2024 @ 23:34
Script: /board.php?boardid=450&sid=d69ea9b45b5393d3a64c23a41eaadf8b
Referer: http://wehrbauten.de/board.php?boardid=450&sid=d69ea9b45b5393d3a64c23a41eaadf8b