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: 25.04.2024 @ 09:13
Script: /board/formmail.php?threadid=918&sid=41345a82610bb411011c25f7aa8f1a6c
Referer: