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 @ 08:59
Script: /board/usercp.php?action=buddy&add=8&sid=ce3b13c9196d4d9599aad6d6bb584182
Referer: