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: 28.03.2024 @ 14:30
Script: /board/usercp.php?action=buddy&add=10&sid=2daf352d2cd4548091c2da21670ca0c2
Referer: