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: 24.04.2024 @ 10:17
Script: /board/register.php?sid=1ece6d8e777c34ac1bc6095c4ef269c1
Referer: