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 @ 18:19
Script: /board/formmail.php?threadid=918&sid=a9e05452201705cccd109deb478df08d
Referer: