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 ('6269f006c13c48959f78099f54b51b82','0','18.226.96.61','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714446963','register.php?sid=133f985af3ea8a4644e84add1b9fe6dc','0','0','')
mysql error: Duplicate entry '6269f006c13c48959f78099f54b51b82' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 30.04.2024 @ 05:16
Script: /register.php?sid=133f985af3ea8a4644e84add1b9fe6dc
Referer: