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 ('8c09c99976923a3fd24291e9b562a09c','0','18.222.111.24','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714725352','register.php?sid=561a31bff11c94c43ac2e886b1b196de','0','0','')
mysql error: Duplicate entry '8c09c99976923a3fd24291e9b562a09c' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 03.05.2024 @ 10:35
Script: /register.php?sid=561a31bff11c94c43ac2e886b1b196de
Referer: