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: 26.04.2024 @ 11:22
Script: /board/usercp.php?action=addsubscription&threadid=761&sid=495977baa121b6d9ecb6c372d19fcd31
Referer: