SQL-DATABASE ERROR

Database error in WoltLab Burning Board (2.3.6 pl 2): Invalid SQL: INSERT INTO bb1_sessions (sessionhash,userid,ipaddress,useragent,lastactivity,request_uri,styleid,langid,authentificationcode) VALUES ('8cb6e4c362f60bb5fd29305aad75e145','0','3.21.248.47','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)','1713941562','thread.php?goto=lastpost&threadid=69579&sid=e6e74f6d7b23f859062797153ef2ffdc','0','0','')
mysql error: Duplicate entry '8cb6e4c362f60bb5fd29305aad75e145' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.44
php version: 5.2.17
Date: 24.04.2024 @ 08:52
Script: /thread.php?goto=lastpost&threadid=69579&sid=e6e74f6d7b23f859062797153ef2ffdc
Referer: http://your-wbb.de/thread.php?goto=lastpost&threadid=69579&sid=e6e74f6d7b23f859062797153ef2ffdc