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 @ 12:51
Script: /board/addreply.php?threadid=923&sid=6ccd4970ee5e7a183f1db0fc486cd99b
Referer: