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: 29.03.2024 @ 10:57
Script: /board/profile.php?userid=1&sid=71275c4ea51974c8a2e6ad81b361bba2
Referer: