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 ('51754a85b66f1313a219d703b56a4e83','0','3.144.86.134','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714959887','login.php?sid=b23ac4263348219602e36bf1f4bfa7b3','0','0','')
mysql error: Duplicate entry '51754a85b66f1313a219d703b56a4e83' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 06.05.2024 @ 03:44
Script: /login.php?sid=b23ac4263348219602e36bf1f4bfa7b3
Referer: http://wehrbauten.de/login.php?sid=b23ac4263348219602e36bf1f4bfa7b3