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 @ 13:29
Script: /board/addreply.php?postid=2159&action=quote&sid=a9cb968742da434c97a6d6425797a0e6
Referer: