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 @ 21:10
Script: /board/usercp.php?action=buddy&add=54&sid=005a5db14d1ab9fe8ba5bfd4ecc86160
Referer: