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: 19.04.2024 @ 01:55
Script: /board/profile.php?userid=6&sid=3eea8206a9a5ae6ec8c78a3dbabe83cc
Referer: