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 ('564355d0cbd6a46b761ece173c7fa2ea','0','3.145.91.37','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715555104','thread.php?threadid=4031&goto=lastpost&sid=c270f96091eaad80fb3597d6083480cf','0','0','')
mysql error: Duplicate entry '564355d0cbd6a46b761ece173c7fa2ea' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 13.05.2024 @ 01:05
Script: /thread.php?threadid=4031&goto=lastpost&sid=c270f96091eaad80fb3597d6083480cf
Referer: