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 @ 11:55
Script: /board/editpost.php?postid=14774&sid=6ccd4970ee5e7a183f1db0fc486cd99b
Referer: