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: 09.07.2025 @ 06:50
Script: /board/login.php?sid=8f894a6c45b069b4bcc8e7fc541a53a8
Referer: