Cant display dates in an archive

HI

I’ve build a custom layout for my event archive (archive-event.php)

When I try to call <?php echo $EM_Event->output('#_EVENTDATES'); ?> I get the error

Fatal error: Call to a member function output() on null in TEMPLATEURL/archive-event.php on line 36

line 36 is the line that calls the above code

Here’s the code

<?php if(have_posts()) : while(have_posts()) : the_post(); ?>
                <div class="column one-third l-one-half s-one-whole">
                    <div class="event">
                        <div class="event-image">
                            <a href="<?php the_permalink(); ?>"><?php get_the_image(array('size' => 'event_square')); ?></a>
                        </div>
                        <div class="event-text">
                            <a href="<?php the_permalink(); ?>">

                                <h3 class="event-title">
                                    <?php the_title(); ?>
                                </h3>
                                <p class="event-meta"> <?php echo $EM_Event->output('#_EVENTDATES'); ?></p>

                                <span class="event-more">
                                    <?php the_excerpt(); ?>
                                </span>
                            </a>
                        </div>
                    </div>

                </div>
            <?php endwhile; else : ?>
                <div class="column one-whole center">
                    <p>No upcoming events...</p>
                </div>
            <?php endif; ?>

Any thoughts?

https://wordpress.org/plugins/events-manager/