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 ('89f4adc3fd69b18c5746a097d258b445','0','3.137.170.14','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715754217','formmail.php?userid=81&sid=759e38cbd5c2074bd35b6a2fe411966b','0','0','')
mysql error: Duplicate entry '89f4adc3fd69b18c5746a097d258b445' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 08:23
Script: /formmail.php?userid=81&sid=759e38cbd5c2074bd35b6a2fe411966b
Referer: http://wehrbauten.de/formmail.php?userid=81&sid=759e38cbd5c2074bd35b6a2fe411966b