Custome Template page post by tag

Hi, how do I implement the output of records for a specific tag?

<?php echo do_shortcode('[ajax_load_more previous_post="true" previous_post_id="'.get_the_ID().'" post_type="post" tag="virusy" progress_bar="true" progress_bar_color="ed7070"]');?>

I for some reason do not print anything, but only an infinite download