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: 08.05.2024 @ 17:27
Script: /board/profile.php?userid=1&sid=555e1a1e77dfa6bea4537634c0868122
Referer: