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 @ 17:15
Script: /board/usercp.php?action=addsubscription&boardid=9&sid=346227675611c4a8f175fd625bc1ed95
Referer: