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 @ 15:58
Script: /board/usercp.php?action=buddy_list&sid=31d29299e35d449dd2b3fffe461dfae6
Referer: