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: 28.03.2024 @ 15:53
Script: /board/register.php?sid=5dab0b3fe9c648cb9be0f487f7dcf490
Referer: