Exported excel with rare characters

Well, I found the problem, is a function on my functions.php:

function custom_pagination($numpages = ”, $pagerange = ”, $paged=”) {

if (empty($pagerange)) {
$pagerange = 2;
}

global $paged;
if (empty($paged)) {
$paged = 1;
}
if ($numpages == ”) {
global $wp_query;
$numpages = $wp_query->max_num_pages;
if(!$numpages) {
$numpages = 1;
}
}

$pagination_args = array(
‘base’ => get_pagenum_link(1) . ‘%_%’,
‘format’ => ‘page/%#%’,
‘total’ => $numpages,
‘current’ => $paged,
‘show_all’ => False,
‘end_size’ => 1,
‘mid_size’ => $pagerange,
‘prev_next’ => True,
‘prev_text’ => __(‘«’),
‘next_text’ => __(‘»’),
‘type’ => ‘array’,
‘add_args’ => false,
‘add_fragment’ => ”
);

$paginate_links = paginate_links($pagination_args);

if ( ! empty( $paginate_links ) ) : ?>
<ul class=”pagination”>
<?php foreach ( $paginate_links as $key => $page_link ) : ?>
<li class=”paginated_link<?php if ( strpos( $page_link, ‘current’ ) !== false ) { echo ‘ active’; } ?>”><?php echo $page_link ?>
<?php endforeach ?>

<?php endif;

}

thanks!