SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: The server requested authentication method unknown to the client
mysql error number: 2054
Date: 29.03.2024 @ 01:36
Script: /board/formmail.php?threadid=923&sid=ea8025efd89c87f8bf81412abc2b308b
Referer: