Wordpress wp_query pagination

wp-query-pagination

<?php
$paged = (get_query_var('page')) ? get_query_var('page') : 1;
$wp_query = new WP_Query(array('post_type' => 'producten','posts_per_page' => 20,'paged' => $paged)); 

while ($wp_query->have_posts()) : $wp_query->the_post();

	// get the template for eacht product column
	get_template_part( 'tpl', 'product' );
	
endwhile;

echo ( paginate_links($args = array(
	'base'         => site_url().'%_%', // site_url prefix is needed for pagination on homepage
	'format'       => '?page=%#%',
	'total'        => $wp_query->max_num_pages,
	'current'      => $paged,
	'show_all'     => false,
	'end_size'     => 2,
	'mid_size'     => 2,
	'prev_next'    => true,
	'prev_text'    => 'Vorige',
	'next_text'    => 'Volgende',
	'type'         => 'list',
	'add_args'     => false,
	'add_fragment' => '' 
)));

wp_reset_query();

?>