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: 26.04.2024 @ 23:07
Script: /board/editpost.php?postid=15082&sid=aef37b3fb272493c4086550fdf3fa15b
Referer: