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 ('a7ac01a92fe1b8bf44aff09e29606fad','0','3.144.243.160','claudebot','1713486920','board.php?boardid=161&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=655f3fcc55428c76d440ac232a9f220f','0','0','')
mysql error: Duplicate entry 'a7ac01a92fe1b8bf44aff09e29606fad' for key 'PRIMARY'
mysql error number: 1062
mysql version: 5.6.13
php version: 7.4.33
Date: 19.04.2024 @ 02:35
Script: /board.php?boardid=161&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=655f3fcc55428c76d440ac232a9f220f
Referer: http://wehrbauten.de/board.php?boardid=161&page=1&daysprune=1000&sortfield=replycount&sortorder=ASC&sid=655f3fcc55428c76d440ac232a9f220f