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: 18.04.2024 @ 22:18
Script: /board/usercp.php?action=buddy&add=1&sid=855eb838dce1b7837fc674fbe72a33ee
Referer: