Wordpress theme... error on my loop? - wordpress

Question

The loop looks good and no errors but when i paginating the loop didn't works and not change the posts showed but the page/2 or page/3 is showed in the url and by these error in the loop the posts are showed 2 hours or more late.
Elsewhere my code is:
<div class="uk-grid contenido" id="contenido">
<div class="uk-width-1-6 uk-hidden-small uk-hidden-medium"></div>
<div class="uk-width-large-2-6 uk-width-small-1-1 uk-width-medium-1-2">
<button class="uk-button-primary" type="button">Al momento</button>
<hr class="uk-grid-divider">
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<article class="uk-article">
<h2 class="uk-article-title"><?php the_title(); ?></h2>
<p class="uk-article-Meta p4d"><?php the_time('l j'); ?> de <?php the_time('F'); ?> de <?php the_time('Y'); ?> - Hace <?php echo human_time_diff( get_the_time('U'), current_time('timestamp') ); ?> | <?php $categories = get_the_category();
$separator = ','; $output = ''; if ( ! empty( $categories ) ) {foreach( $categories as $category ) {$output .= '' . esc_html( $category->name ) . '' . $separator; } echo trim( $output, $separator );} ?> | <?php if(function_exists('the_views')) { the_views(); } ?></p>
<p class="uk-article-lead"><?php echo substr(get_the_excerpt(), 0,130); ?>...<a class="more" href="<?php the_permalink(); ?>">(+)</a></p>
<div class="uk-thumbnail uk-thumbnail-large uk-overlay-hover uk-overlay-grayscale"><?php echo get_the_post_thumbnail($post->ID, 'articulo-normal-index'); ?></div>
<p class="uk-article-meta"><?php $categories = get_the_category();
$separator = ','; $output = ''; if ( ! empty( $categories ) ) {foreach( $categories as $category ) {$output .= '' . esc_html( $category->name ) . '' . $separator; } echo trim( $output, $separator );} ?> / <?php the_title(); ?></p>
<hr class="uk-article-divider">
</article>
<?php endwhile; ?>
<?php numeric_posts_nav(); ?>
<?php else : ?>
<p>Disculpa, no hay articulos</p>
<?php endif; ?>
</div>
<div class="separate uk-hidden-small uk-hidden-medium"></div>
<div class="uk-width-large-1-6 uk-hidden-small uk-width-medium-1-2 uk-block-muted min-padding">
<button class="uk-button-primary" type="button">Destacadas</button>
<hr class="uk-grid-divider">
<article class="uk-article uk-text-center">
<?php
global $post;
$args = array( 'numberposts' => 10, 'category_name' => 'destacada' );
$posts = get_posts( $args );
foreach( $posts as $post ): setup_postdata($post);
?>
<h2 class="uk-article-title-small uk-text-center"><?php the_title(); ?></h2>
<p class="uk-article-meta uk-text-center"><?php the_time('l j'); ?> de <?php the_time('F'); ?> de <?php the_time('Y'); ?> - Hace <?php echo human_time_diff( get_the_time('U'), current_time('timestamp') ); ?></p>
<div class="uk-thumbnail uk-thumbnail-medium uk-container-center"><?php echo get_the_post_thumbnail($post->ID, 'articulo-destacadas-sidebar'); ?></div>
<hr class="uk-article-divider">
</article>
<?php
endforeach;
?>
<div class="uk-text-center data-uk-lightbox"><?php dynamic_sidebar( 'anuncio-destacadas' ); ?></div>
</div>
<?php get_sidebar(); ?>
<div class="uk-width-1-6"></div>
</div>