Ndtyjky

When I click on the next page of my pagination, transfer me to page 404. I tried everything, but there was no success. I'm not sure if I need to insert something into functions.php or in a URL. Here's my code:
Here's my code:

<ul>

    <?php

     $paged = (get_query_var('paged')) ? absint(get_query_var('paged')) : 1;

    $monthnum = (get_query_var('monthnum')) ? absint(get_query_var('monthnum')) : -1;

    $year = (get_query_var('year')) ? absint(get_query_var('year')) : -1;



    $args = array(

          'post_type'      => 'post',

           'posts_per_page' => 5,

           'taxonomy'       => 'category',

           'field'          => 'slug',

           'paged'          => $paged,

        );

       if($monthnum != -1 && $year != -1){

        $args["monthnum"] = $monthnum;

        $args["year"] = $year;

       }

      $posts = new WP_Query($args);

      if ($posts->have_posts()) {

         while ($posts->have_posts()) {

            $posts->the_post();

     ?>

   <li>

    <span class="date"><?php echo get_the_time('d.m.y') ?></span>

      <a href="<?php echo get_the_permalink(); ?>"><h3><?php the_title() ?></h3></a>

    <div class="postContent">

      <!-- start postContent -->

      <div class="postExcerpt"><?php the_excerpt(); ?></div>

      <div class="permalink"><a href="<?php echo get_the_permalink(); ?>">Read More</a></div>

      </div>

   <!-- end postContent -->

  </li>

 <?php } ?>

   <div class="pagination">

   <!-- start pagination-->

  <?php $big = 999999999; // need an unlikely integer

    echo paginate_links(array(

            'base'  => str_replace($big, '%#%',esc_url(get_pagenum_link($big))),

            'format'    => '/paged/%#%',

            'current'   => max(1, $paged),

            'total'     => $posts->max_num_pages,

            'mid_size'  => 1,

            'prev_text' => "<",

            'next_text' => ">"

         )); 

?> 

     </div>

    <?php   

      } else {

                echo 'No matching results found. Please modify your 

                   search criteria and try searching again.!';

           }

       ?>



      <!-- end pagination-->

    </ul>

You need to modify query as:

$paged = (get_query_var('page_val') ? get_query_var('page_val') : 1);

  $query = new WP_Query(array(

    'post_type'      => 'post',

    'posts_per_page' => 3,

    'cat' => $cat,

    'orderby' => 'date',

    'paged' => $paged,

    'order' => 'DESC'

    )

  );

For pagination, I changed this code like this. Hope this will help you:

$big = 999999999;  

echo paginate_links(array(

          'base' => str_replace($big, '%#%', esc_url(get_pagenum_link($big))),

           'format' => '/page/%#%',

            'current' => max(1, $paged),

            'prev_text' => __('Previous Page'),

            'next_text' => __('Next Page'),

            'show_all' => true,

            'total' => $query->max_num_pages

    ));

I combined the code from the answer Gufran Hasan, and add this code on my function.php. Problem solved!

Thanks man! Gufran Hasan

Code:

function custom_pre_get_posts($query)

{

   if ($query->is_main_query() && !$query->is_feed() && !is_admin() && is_category()) {

    $query->set('page_val', get_query_var('paged'));

    $query->set('paged', 0);

   }

}



add_action('pre_get_posts', 'custom_pre_get_posts');