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 ('cde6f338800da74810eadb1317e2c5d4','0','18.190.156.78','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715785653','board.php?boardid=113&sid=19bdc99ec201cfc129567bbdd937f85e','0','0','')
mysql error: Duplicate entry 'cde6f338800da74810eadb1317e2c5d4' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 17:07
Script: /board.php?boardid=113&sid=19bdc99ec201cfc129567bbdd937f85e
Referer: http://wehrbauten.de/board.php?boardid=113&sid=19bdc99ec201cfc129567bbdd937f85e