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 ('d625f51a94747641f48baac5c8301e6c','0','18.226.28.197','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714160706','register.php?sid=8b723c4e53a8fb0dacb2fc4d658199c0','0','0','')
mysql error: Duplicate entry 'd625f51a94747641f48baac5c8301e6c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 26.04.2024 @ 21:45
Script: /register.php?sid=8b723c4e53a8fb0dacb2fc4d658199c0
Referer: