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 ('83f343fac8f2d75c10c3af7ab52fae61','0','3.19.31.73','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714555186','usercp.php?action=buddy&add=2757&sid=9ea5763214ac990230f0f0968a040a59','0','0','')
mysql error: Duplicate entry '83f343fac8f2d75c10c3af7ab52fae61' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 01.05.2024 @ 11:19
Script: /usercp.php?action=buddy&add=2757&sid=9ea5763214ac990230f0f0968a040a59
Referer: