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 ('402ccf069e8c06633e3a1293d635d728','0','3.141.202.187','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714532667','usercp.php?action=buddy&add=642&sid=cc5ffd35f385755c34aced2b180224db','0','0','')
mysql error: Duplicate entry '402ccf069e8c06633e3a1293d635d728' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.5.62-0+deb8u1
php version: 5.6.40-0+deb8u12
Date: 01.05.2024 @ 05:04
Script: /board/usercp.php?action=buddy&add=642&sid=cc5ffd35f385755c34aced2b180224db
Referer: