Display Category name on Metro-skin 01

[thibsParticipant]

Hi there !
How can I display the category name above the title on Metro-skin 01 item ?
I’ve checked the metro-skin-01.php and add this line but obviously it doesn’t work !!! Anyone can help me.
Many thanks.

<div class="fat-event-meta">
                <div class="categorie"><?php echo get_the_category($event['id']); ?></div>
                <div class="fat-event-title fat-mg-bottom-5">
                    <a href="<?php echo esc_url($event['link_detail']) ?>" data-open-type="<?php echo esc_attr($event['open_detail_type']);?>"
                       data-s="<?php echo esc_attr($event['start_date']->format('U')); ?>" data-e="<?php echo esc_attr($event['end_date']->format('U')); ?>"
                       target="<?php echo esc_attr($event['link_open_type']); ?>"><?php echo get_the_title($event['id']); ?></a>
                </div>

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