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: 28.03.2024 @ 23:34
Script: /board/usercp.php?action=addsubscription&boardid=11&sid=2626c40cebfbf23809fb0456b5263e23
Referer: