Removing Extra Commas from Geolocation Input

The code you previously provided made the Country and City fields optional, and changed the Address field to accept latitude and longitude. However, after making these fields optional, I noticed that when navigating to the location using the latitude and longitude, two extra commas (,,) appear after the coordinates. Is there a way to remove these extra commas?

add_filter( 'wpsl_meta_box_fields', 'custom_meta_box_fields' );

function custom_meta_box_fields( $meta_fields ) {

    /**
     * If no 'type' is defined it will show a normal text input field.
     *
     * Supported field types are checkbox, textarea and dropdown.
     */
    $meta_fields[ __( 'Location', 'wpsl' ) ] = array(
        'address' => array(
            'label'    => __( 'Address', 'wpsl' ),
        ),
        'address2' => array(
            'label' => __( 'Address 2', 'wpsl' )
        ),
        'city' => array(
            'label'    => __( 'City', 'wpsl' ),
        ),
        'state' => array(
            'label' => __( 'State', 'wpsl' )
        ),
        'zip' => array(
            'label' => __( 'Zip Code', 'wpsl' )
        ),
        'country' => array(
            'label'    => __( 'Country', 'wpsl' )
        ),
        'country_iso' => array(
            'type' => 'hidden'
        ),
        'lat' => array(
            'label' => __( 'Latitude', 'wpsl' )
        ),
        'lng' => array(
            'label' => __( 'Longitude', 'wpsl' )
        )
    );
    return $meta_fields;
    
  }

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