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 @ 18:48
Script: /board/search.php?action=user&userid=9&sid=a9cb968742da434c97a6d6425797a0e6
Referer: