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: 16.04.2024 @ 20:13
Script: /board/register.php?sid=ef5b1d7c0f45f157d0c487b4234695a1
Referer: