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 ('31de82b4ba116063688d9a1a57cff34d','0','3.144.75.143','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715968859','addreply.php?action=quote&postid=75909&sid=652fa9249ef29dcb7d13857e94f5f0ed','0','0','')
mysql error: Duplicate entry '31de82b4ba116063688d9a1a57cff34d' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 17.05.2024 @ 20:00
Script: /addreply.php?action=quote&postid=75909&sid=652fa9249ef29dcb7d13857e94f5f0ed
Referer: