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 ('ffb3c5349fca099fb6808e03f4142c57','0','18.220.65.61','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715572291','usercp.php?action=addsubscription&threadid=1193&sid=a6a526a5dfe2f9453cc0aa4139a566d5','0','0','')
mysql error: Duplicate entry 'ffb3c5349fca099fb6808e03f4142c57' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 13.05.2024 @ 05:51
Script: /usercp.php?action=addsubscription&threadid=1193&sid=a6a526a5dfe2f9453cc0aa4139a566d5
Referer: