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 @ 15:54
Script: /board/login.php?sid=f3eec7d3072ae8db3dfc97a6759b8709
Referer: