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: 26.04.2024 @ 23:38
Script: /board/formmail.php?threadid=930&sid=4ea2ecb2cadd4f39bafe23702957fbb9
Referer: