Result pagination

I add such code for pagination

$big = 999999999;
echo paginate_links( array(
	'base' => str_replace( $big, '%#%', esc_url( get_pagenum_link( $big ) ) ),
	'format' => '?paged=%#%',
	//'base' => esc_url_raw( add_query_arg( 'product-page', '%#%', false ) ),
	//'format' => '?product-page=%#%',
	'current' => max( 1, get_query_var('paged') ),
	'type' => 'list',
	'prev_text'    => __(''), 
    'next_text'    => __(''),
	'total' => $search_res->max_num_pages
) );
wp_reset_query();

Pagination links have such url
example.com/page/2/?s=гру&post_type=product&dgwt_wcas=1#038;post_type=product&dgwt_wcas=1
But if click it, I will have 404. I think it is error, beacause of example.com/page/2/ – no such page. Or what the problem and how I can solve it?