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: 18.04.2024 @ 22:07
Script: /board/editpost.php?postid=11775&sid=f6aceef666e25efbbbf4a757f3d41d74
Referer: