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: 28.03.2024 @ 20:38
Script: /board/usercp.php?action=addsubscription&boardid=28&sid=10e88af6a8b8b587521b2c5e7a08bcb4
Referer: