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 ('b1972610da7be1e12ff254598a7bf9ca','0','18.190.153.63','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715649156','newthread.php?boardid=300&sid=59b816d58b0f8670d63de44fd783affc','0','0','')
mysql error: Duplicate entry 'b1972610da7be1e12ff254598a7bf9ca' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 14.05.2024 @ 03:12
Script: /newthread.php?boardid=300&sid=59b816d58b0f8670d63de44fd783affc
Referer: http://wehrbauten.de/newthread.php?boardid=300&sid=59b816d58b0f8670d63de44fd783affc