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 ('9f4c5028a73a1d2d75a464a28e20e960','0','18.227.114.125','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714728314','formmail.php?userid=612&sid=66fa0465be6a0ba3db3c4d7632df9b87','0','0','')
mysql error: Duplicate entry '9f4c5028a73a1d2d75a464a28e20e960' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 11:25
Script: /formmail.php?userid=612&sid=66fa0465be6a0ba3db3c4d7632df9b87
Referer: http://wehrbauten.de/formmail.php?userid=612&sid=66fa0465be6a0ba3db3c4d7632df9b87