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 @ 07:38
Script: /board/search.php?action=user&userid=53&sid=5f1b9e9c9bcc2bbad1ba8d3958dc3b3b
Referer: