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 ('46e48091e56007c2a5cb697343bc9dee','0','3.15.3.154','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715461304','board.php?boardid=363&sid=759bf80b05fece88c0de9bbd33a7aae5','0','0','')
mysql error: Duplicate entry '46e48091e56007c2a5cb697343bc9dee' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 23:01
Script: /board.php?boardid=363&sid=759bf80b05fece88c0de9bbd33a7aae5
Referer: http://wehrbauten.de/board.php?boardid=363&sid=759bf80b05fece88c0de9bbd33a7aae5