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 @ 19:41
Script: /board/editpost.php?postid=12985&sid=d4ab5fdb0ed12a6f679650b048d1e80c
Referer: