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 @ 21:23
Script: /board/register.php?sid=9f23e0f6fb63c81abef286e8aaec5436
Referer: