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: 29.03.2024 @ 05:22
Script: /board/board.php?boardid=6&sid=cc74a523b9cf8741dbe4e3fcfda75206
Referer: