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 ('bc9718f89ed897ccd46cd8b523cbff05','0','3.147.56.45','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715416439','usercp.php?action=addsubscription&boardid=414&sid=6f64ec74395fce0259241e4ff4778bb7','0','0','')
mysql error: Duplicate entry 'bc9718f89ed897ccd46cd8b523cbff05' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 11.05.2024 @ 10:33
Script: /usercp.php?action=addsubscription&boardid=414&sid=6f64ec74395fce0259241e4ff4778bb7
Referer: