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 ('c84a770831b7c1ac572f9f9dee0e3dc3','0','18.119.248.159','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715730493','thread.php?goto=lastpost&threadid=568&sid=182c866946fa349d6d8ba43c08471216','0','0','')
mysql error: Duplicate entry 'c84a770831b7c1ac572f9f9dee0e3dc3' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 15.05.2024 @ 01:48
Script: /thread.php?goto=lastpost&threadid=568&sid=182c866946fa349d6d8ba43c08471216
Referer: