Archive per year of a custom post getting the wrong post

Archive per year of a custom post getting the wrong post

I got the wp_get_the_archives() to list the years of my post but even though the url is ok, the post shown in the year archive just give the last post depending on how many post I have per year.

For example, I have 3 post for 2008, the archive of that year will only show me 3 posts but just the last three (2 from 2021 and 1 from 2016). If I have 1 from 2016, the archive will show me one post, but is just the last one from 2021. And so on… what did I do wrong?

My functions.php file

 <?php  function recursos_ah6studio(){     wp_enqueue_style('bootstrap', get_theme_file_uri('/css/bootstrap.min.css'));     wp_enqueue_style('slick', get_theme_file_uri('/slick/slick.css'));     wp_enqueue_style('slick-theme', get_theme_file_uri('/slick/slick-theme.css'));     wp_enqueue_style('magnific-popup', get_theme_file_uri('/magnific-popup/magnific-popup.css'));     wp_enqueue_style('font-awesome', get_theme_file_uri('/fontawesome-5.5/css/all.min.css'));     wp_enqueue_style('estilo_ah6studio', get_stylesheet_uri());          /*wp_enqueue_script('mainJS', get_theme_file_uri('/js/main_js.js'), NULL, '1.0', true); */     wp_enqueue_script('jquery', get_theme_file_uri('/js/jquery-3.5.1.min.js'), NULL, '1.0', true);     wp_enqueue_script('popper', get_theme_file_uri('/js/popper.min.js'), NULL, '1.0', true);     wp_enqueue_script('boostrap', get_theme_file_uri('/js/bootstrap.min.js'), NULL, '1.0', true);     wp_enqueue_script('slickJS', get_theme_file_uri('/slick/slick.min.js'), NULL, '1.0', true);     wp_enqueue_script('magnific-popup', get_theme_file_uri('/magnific-popup/jquery.magnific-popup.min.js'), NULL, '1.0', true);     wp_enqueue_script('easingJS', get_theme_file_uri('/js/easing.min.js'), NULL, '1.0', true);     wp_enqueue_script('singlePageJS', get_theme_file_uri('/js/jquery.singlePageNav.min.js'), NULL, '1.0', true);      wp_enqueue_script('tool-tip', get_theme_file_uri('/js/tooltip.js'), NULL, '1.0', true);  }  add_action('wp_enqueue_scripts', 'recursos_ah6studio');  function mytheme_enqueue_front_page_scripts() {     if( is_front_page() )     {         wp_enqueue_script('bkcground-random', get_theme_file_uri('/js/background_random.js'), NULL, '1.0', true);        } } add_action( 'wp_enqueue_scripts', 'mytheme_enqueue_front_page_scripts' );  function ourWidgetInit(){  register_sidebar( array ( 'name' => 'Sidebar', 'id' => 'sidebar1',  ));  register_sidebar( array (     'name' => 'Desplegable',     'id' => 'desplega1',     'before_widget'=>'<div class="widget-item">',     'after_widget'=> '</div>',     'before_title'=>'<h6 class="category_title">',     'after_title'=>'</h6>',      )); }  add_action('widgets_init', 'ourWidgetInit');  //Añadir el thumbnail// function ah6studio_setup() {     add_theme_support('post-thumbnails');     add_theme_support('title-tag');  } add_action('after_setup_theme','ah6studio_setup');  

My plugin file ah6_postypes.php

 <?php  function ah6_papers() {     register_post_type('papers', array(         'has_archive'=> true,         'public'=> true,         'posts_per_page' => -1,         'labels'=> array(             'name'=>'Papers',             'add_new'=> 'Agregar un Paper',             'edit_item'=>'Editar un Paper',             'all_items'=>'Todos los Papers',             'singular_name'=>'Paper'                      ),         'taxonomies' => array('temas'),         'menu_icon'=>  'dashicons-media-text',     )); }  add_action('init', 'ah6_papers');   function papers_categories() {     //Taxonomía: TEMAS     //Traducción para el backend        $  labels = array(         'name' => _x( 'Temas', 'taxonomy general name' ),         'singular_name' => _( 'Tema', 'taxonomy singular name' ),         'search_items' =>  __( 'Buscar tema' ),         'all_items' => __( 'Todos los temas' ),         'parent_item' => __( 'Tema padre' ),         'parent_item_colon' => __( 'Tema padre:' ),         'edit_item' => __( 'Editar tema' ),          'update_item' => __( 'Actualizar tema' ),         'add_new_item' => __( 'Añadir nuevo tema' ),         'new_item_name' => __( 'Nombre del nuevo tema' ),         'menu_name' => __( 'Temas' ),       );               // Registrando la taxonomía       register_taxonomy('temas',array('papers'), array(         'hierarchical' => true,         'labels' => $  labels,         'show_ui' => true,         'show_in_rest' => true,         'show_admin_column' => true,         'query_var' => true,         'rewrite' => array( 'slug' => 'temas' ),       ));        //Taxonomía: TERRITORIOS     //Traducción para el backend      $  labels = array(         'name' => _x( 'Territorios', 'taxonomy general name' ),         'singular_name' => _( 'Territorio', 'taxonomy singular name' ),         'search_items' =>  __( 'Buscar territorio' ),         'all_items' => __( 'Todos los territorios' ),         'parent_item' => __( 'Territorio padre' ),         'parent_item_colon' => __( 'Territorio padre:' ),         'edit_item' => __( 'Editar territorio' ),          'update_item' => __( 'Actualizar territorio' ),         'add_new_item' => __( 'Añadir nuevo territorio' ),         'new_item_name' => __( 'Nombre del nuevo territorio' ),         'menu_name' => __( 'Territorios' ),       );               // Registrando la taxonomía       register_taxonomy('territorios',array('papers'), array(         'hierarchical' => true,         'labels' => $  labels,         'show_ui' => true,         'show_in_rest' => true,         'show_admin_column' => true,         'query_var' => true,         'rewrite' => array( 'slug' => 'territorios' ),       ));           }      add_action( 'init', 'papers_categories', 0 );