lespalmeresvendrell

here is the solution

<?php
$the_query = new WP_Query( array(
    'post_type'   => 'project_post',
    'meta_key'    => 'time',
    'orderby'     => 'meta_value'
) );
$any = '';
while ($the_query->have_posts() ) :
        $the_query->the_post();
        $temp_date = get_post_meta( get_the_ID(), 'time', true );?>
    <div class="project" >
    <?if ($temp_date != $any ) {
        $any = $temp_date;?>
    <div><?echo date( "Y", strtotime( $any));?></div>
    <?}else{?><div class="field"></div><?}?>
   <div><?the_title();?> </div>
   <div><?the_field( "region" );?></div>
   </div>
   <div style="clear:both"></div>

<?endwhile;?>

I think this must be a kind of select distinct…but no idea

That means you made a website for a customer, you are forced to make maintenance works for the rest of your life?….

It seems that the problem is my version of wordpress…could it be?
The others topics of the scan result are related to some javascripts but this javscripts are not malicious…