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 ('d66de5d476ba5e6444bbe06b29697d10','0','3.139.80.15','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1716319779','formmail.php?userid=5649&sid=5259c094b3e31ef3105f6841313880ef','0','0','')
mysql error: Duplicate entry 'd66de5d476ba5e6444bbe06b29697d10' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 21.05.2024 @ 21:29
Script: /formmail.php?userid=5649&sid=5259c094b3e31ef3105f6841313880ef
Referer: