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: 09.05.2024 @ 17:31
Script: /board/editpost.php?postid=14774&sid=cd223849ba066e5e24dd1fd86f20cff5
Referer: