Meta Box info not showing

My metaboxes are showing on the admin side and the custom fields is showing the data is in the database, but I'm getting no output on the front end. I'm using the following in my page template:

<?php if ( !empty( rwmb_meta( 'cswwc_page_header' ) ) ) : ?>
<header>
	<?php echo rwmb_meta( 'cswwc_page_header' ); ?>
</header>
<?php endif; ?>