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 @ 08:33
Script: /board/usercp.php?action=buddy_list&sid=5eecf3055e4e56f0775148ee7806d5f2
Referer: