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 ('4d0c064bcb3f21e342ed968e31d7e295','0','3.145.93.210','Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.c','1714783535','board.php?boardid=26&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=7ab37c6f05ab47543a1bbf23e5fb3aca','0','0','')
mysql error: Duplicate entry '4d0c064bcb3f21e342ed968e31d7e295' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 04.05.2024 @ 02:45
Script: /board.php?boardid=26&daysprune=1000&sortfield=lastposttime&sortorder=ASC&sid=7ab37c6f05ab47543a1bbf23e5fb3aca
Referer: