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: 29.03.2024 @ 02:39
Script: /board/addreply.php?postid=12969&action=quote&sid=42f9cc15dbeb7171553d43cd23c5fe53
Referer: