Custom query URL 404 on server

Hello,

I created a function that show all tag from a post, when you click on the tag a url redirect you to an archive page with all post with the same tag. It work perfectly on localhost but when I send it on my web server (Plesk) it didn’t work at all and I’m redirected to my custom 404 page.

this is the function who “generate” the url :

function IPSL_search_tag($tag_slug=null){
  global $IPSL;

    $PTYPE=array();
    $ptype_list=$IPSL->PODS_LIST;
    $ptype_list[]='post';
    $ptype_list[]='page';

    $PTYPE='&post_type[]='.implode('&post_type[]=',$ptype_list);

    
    $template = get_template_part('find', 'tags');

 $q=site_url()."?posts_per_page=-1&nopaging=true&tag[]=$tag_slug&post_status=publish&orderby=post_date&order=desc";
return $q ;

}
add_shortcode("IPSL_search_tag", "IPSL_search_tag"); 

And this is the function who show the tag :

function sc_PODTags($atts){
  global $wpdb;
  //error_log(var_export("PODS TAG is charged ipsl_shortcode l343", true));
  $args=shortcode_atts(array(
  'titre'=>'Tags cloud',
  'hide'=>0,
  ),$atts);
  extract($args);

  $id=get_the_ID();
  $tags=get_the_tags($id);
  
  if(empty($tags))return'';
  if($args['hide'])return;

  $ar=array();
  $html[]='<div class="tagcloud">
  <h2 class="widget-title">'.$titre.'</h2>';

  
  foreach($tags as $tag){

    $href=IPSL_search_tag($tag->slug); 
   
    $txt=esc_html( $tag->name ); 
    
    $html[]='<a class="tag-cloud-link" href="'.$href.'">'.$txt.'</a>'; 
    
  }
  $html[]='</div>';

  
  
  return implode('',$html);
}
add_shortcode('PODTags', 'sc_PODTags'); 

The page I need help with: [log in to see the link]