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: 16.04.2024 @ 18:22
Script: /board/usercp.php?action=buddy&add=53&sid=596d9041b57bb41a5e6e84623c75afd2
Referer: