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 ('ffafc26a022e40479433accee30cb4f2','0','3.147.46.58','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715403094','board.php?boardid=723&sid=55cc90e4f1587f588fc676c11051ad38','0','0','')
mysql error: Duplicate entry 'ffafc26a022e40479433accee30cb4f2' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 06:51
Script: /board.php?boardid=723&sid=55cc90e4f1587f588fc676c11051ad38
Referer: http://wehrbauten.de/board.php?boardid=723&sid=55cc90e4f1587f588fc676c11051ad38