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 @ 05:27
Script: /board/addreply.php?threadid=951&sid=626741f597b345b7f6fbe54e521fec09
Referer: