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 ('81761270929a6b83a1a08956231a96ac','0','3.145.93.221','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1715088094','thread.php?goto=lastpost&threadid=9422&sid=5d13807ec1bf38fc8596c10b6ad73722','0','0','')
mysql error: Duplicate entry '81761270929a6b83a1a08956231a96ac' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.7.41
php version: 5.6.40
Date: 07.05.2024 @ 15:21
Script: /thread.php?goto=lastpost&threadid=9422&sid=5d13807ec1bf38fc8596c10b6ad73722
Referer: