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: 16.04.2024 @ 04:01
Script: /board/usercp.php?action=options_change&sid=5969918aeacb39dbbf31c2984125d7b7
Referer: