SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('bf303f10f12133b981f95c5012bc87aa','0','18.223.171.12','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714352042','calendar.php?sid=8eae618d26c6b5b7c57f24bf25772399','0','0','')
mysql error: Duplicate entry 'bf303f10f12133b981f95c5012bc87aa' for key 'PRIMARY'
mysql error number: 1062
mysql version: 10.5.23-MariaDB-0+deb11u1
php version: 5.6.40
Date: 29.04.2024 @ 02:54
Script: /calendar.php?sid=8eae618d26c6b5b7c57f24bf25772399
Referer: