Category list with child categories for Wordpress Events

event-category-list.php

<?php
                $terms = get_terms("tribe_events_cat", array(
                    'parent' => 0,
                ));
				 //print_r ($terms);
				// $terms = ($terms [parent] => 0 );
                $count = count($terms);
                if ( $count > 0 ){
                echo '<ul class="events-cat-menu">'; 
                ?>
                <?php foreach ( $terms as $term ): ?>
                    <li class="cat_<?php esc_attr_e($term->slug); ?>"><a href="<?php get_term_link($term->slug, 'tribe_events_cat'); ?>"><?php esc_html_e($term->name); ?></a>

                    <ul>
                    <?php 

                    // get children
                    $kids = get_terms('tribe_events_cat', array(
                        'parent'=>$term->term_id,
                    ));

                    foreach ( $kids as $kid) {
                        echo '<li class="cat_'. $kid->slug .'"><a href="'. get_term_link($kid->slug, 'tribe_events_cat') .'">' . $kid->name . '</a></li>';
                    }
                    ?>
                    </ul>
                    </li>

                <?php endforeach; ?>
                <?
                echo '</ul>';
                }
                ?>