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: 19.04.2024 @ 06:05
Script: /board/usercp.php?action=addsubscription&threadid=918&sid=41345a82610bb411011c25f7aa8f1a6c
Referer: