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 ('303a49d0c54aa27a8543bfb85e243d75','0','18.119.131.178','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714550523','thread.php?goto=lastpost&threadid=7566&sid=95c0693e38da6659269a39842cd41fdc','0','0','')
mysql error: Duplicate entry '303a49d0c54aa27a8543bfb85e243d75' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.42-log
php version: 5.6.40
Date: 01.05.2024 @ 10:02
Script: /thread.php?goto=lastpost&threadid=7566&sid=95c0693e38da6659269a39842cd41fdc
Referer: