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: 25.04.2024 @ 12:22
Script: /board/register.php?sid=f8e10f3d963f0545a4d592bc66386e4b
Referer: