Warning: mysqli_connect(): (HY000/2002): No such file or directory in /volume1/web/TMEP-8.4 doma/scripts/db.php on line 3

Call Stack:
    0.0018     361992   1. {main}() /volume1/web/TMEP-8.4 doma/index.php:0
    0.0037     362440   2. require('/volume1/web/TMEP-8.4 doma/scripts/db.php') /volume1/web/TMEP-8.4 doma/index.php:13
    0.0037     362440   3. mysqli_connect($host = 'localhost', $user = 'root', $password = 'zfx!CKR!vjc!pdw6kck') /volume1/web/TMEP-8.4 doma/scripts/db.php:3

<div style="float: center; margin: auto; background-color:white; border: solid red 5px; padding: 5px; font-weight: bold;">
        Nepodarilo se spojit s databazovym serverem a prihlasit se. Prosim, zkontrolujte nastaveni.<br>
        Unable to connect to database server and log in. Please, check out your settings.
        </div>