Add active class to menu items of current taxonomy

function.php

<?php
function current_taxonomy_item($classes, $item) {
    global $naventries;
    $naventries[$item->ID] = $item;
    if($item->type == 'taxonomy') {
        global $post;
        $terms = get_the_terms($post->ID, $item->object);
        $currentTerms = array();
        foreach($terms as $term) {
            $currentTerms[] = $term->slug;
        }
        if(is_array($currentTerms) && count($currentTerms) > 0) {
            $currentTerm = get_term($item->object_id, $item->object);
            if(in_array($currentTerm->slug, $currentTerms)) {
                $classes[] = 'current-menu-item';
            }
        }
    }
    return $classes;
}
add_filter('nav_menu_css_class' , 'current_taxonomy_item' , 10 , 2);
?>