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 @ 09:57
Script: /board/usercp.php?action=addsubscription&boardid=24&sid=603f51dbe07fd333abb38f64bd8644ac
Referer: