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: 20.04.2024 @ 01:18
Script: /board/profile.php?userid=1&sid=a44e1b486cba21809c54c19fd79d7bee
Referer: