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: 20.04.2024 @ 11:41
Script: /board/usercp.php?action=addsubscription&boardid=28&sid=2a4ef6b3fce36138685d8f82e31bbf8b
Referer: