Warning: mysqli_connect(): (HY000/1049): Unknown database 'tremedales' in /var/www/vhosts/lostremedales.com/httpdocs/old/Connections/marinos.php on line 4

Warning: mysqli_error() expects parameter 1 to be mysqli, boolean given in /var/www/vhosts/lostremedales.com/httpdocs/old/Connections/marinos.php on line 4
I cannot connect to the database because: