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: 18.04.2024 @ 23:24
Script: /board/profile.php?userid=54&sid=e93aa243e75fef4eebc23cfc821e286b
Referer: