No matter I fixed it. The problem was with “get_field” I replaced it with “the_field”
<?php
global $post;
// load all 'category' terms for the post
$terms = get_the_terms($post->ID, "product_brand");
// we will use the first term to load ACF data from
if( !empty($terms) )
{
$term = array_pop($terms);
$custom_field = the_field('contact_info', 'product_brand_' . $term->term_id);
// do something with $custom_field
}
?>
