How to rended e107 css/js files outside header template?

[Jimmi08]

Ho,
class2 is included, e107 is fully working
On custom page I need to use only CSS files from actual e107 theme

This is not working:

$e_js = e107::getJs();

	e107::css('url', SITEURL . 'ethemes/revest/assets/vendor/bootstrap/css/bootstrap.min.css');
	e107::css('url', SITEURL . 'ethemes/revest/assets/vendor/font-awesome/css/all.min.css');
	e107::css('url', SITEURL . 'ethemes/revest/assets/vendor/nice-select/css/nice-select.css');
	e107::css('url', SITEURL . 'ethemes/revest/assets/vendor/magnific-popup/css/magnific-popup.css');
	e107::css('url', SITEURL . 'ethemes/revest/assets/vendor/slick/css/slick.css');
	e107::css('url', SITEURL . 'ethemes/revest/assets/vendor/animate/animate.css');
	e107::css('url', SITEURL . 'ethemes/revest/assets/css/style.css');
	e107::css('url', SITEURL . 'ethemes/revest/style.css');

	$text = $e_js->renderLinks();
	echo $text;

$text is NULL.
I checked paths, they are correct.
What is missing?
Thanks