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: 23.04.2024 @ 16:41
Script: /board/search.php?action=user&userid=8&sid=ce3b13c9196d4d9599aad6d6bb584182
Referer: