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: 19.04.2024 @ 07:44
Script: /board/register.php?sid=32712b0e18c2d4e6ea714a5f38fc1b65
Referer: