The below code is added into a page template file, when someone loads the page it will add the post meta if it didn't exist, it will update the post meta if it did exist. When I get the post meta and then return it, the outcome is "Array".
It leads me to believe the post meta is not being made or the get isn't working.
global $post;
if ( ! add_post_meta( $post->ID, 'offer_voucher_evergreen_deadline', '2018-11-16 13:00:00')) {
update_post_meta($post->ID, 'offer_voucher_evergreen_deadline', '2018-11-16 13:00:00');
}
$test = get_post_meta($post->ID, 'offer_voucher_evergreen_deadline', true);
echo $test;