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: 05.07.2025 @ 17:54
Script: /board/usercp.php?action=buddy&add=8&sid=8d074de05c3ecaf552afbcb6a55e8e3a
Referer: