Map box does not show the given center

Question

 L.mapbox.accessToken = \'pk.eyJ1IjoiYWdvdWhtYWQiLCJhIjoiY2toaWRieDJ4MHFrNzJzcDlnd2JmazZxMiJ9.JQlt7Rz-dQWgkvG0B5OI8Q\';

        var mapboxTiles = L.tileLayer(\'https://