Markers not showing on Google Map

My custom markers aren’t coming up on a google map on my WordPress site. I’ve reviewed the code for bugs and I’ve seen the following error in the console: (index):573 Uncaught ReferenceError: myMarkers is not defined at initialize however I have another site with nearly the same exact code that is working fine and so I can’t figure out why myMarkers is not defined. I’ve tried rearranging the code to no avail. Has anyone seen this before? Thanks!

Map is at the bottom of the page here: https://excelsportspt.com/

Here is the code:

<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBtKFXFKTieXTdke5jGk_KxZE6FYEADYxg"></script>
    <script type="text/javascript">// <![CDATA[
        jQuery(document).ready(function() {
            <?php if (have_rows('location_map', 'options')): ?>
                //set up markers
                myMarkers = {"markers": [
                    <?php while (have_rows('location_map', 'options')): the_row();
                        $loclatitude = get_sub_field('address_latitude', 'options');
                        $loclongitude = get_sub_field('address_longitude', 'options');
                        $locname = get_sub_field('address_name', 'options');
                        $locadd = get_sub_field('address', 'options');
                        $locmap = get_sub_field('loc_map_url');
                    ?>
                        {
                            'latitude': '<?= $loclatitude; ?>',
                            'longitude': '<?= $loclongitude; ?>',
                            'icon': '<?= esc_url(get_template_directory_uri()); ?>/images/map-pin.png',
                            'balloon_text': '<a target="_blank" href="<?= $locmap; ?>"><?= $locname; ?></a>'
                        },
                    <?php endwhile; ?>
                ]}
            <?php endif; ?>
            map = '';
            function initialize() {
                var myOptions = {
                    center: new google.maps.LatLng(38.7234409, -90.6383197),
                    zoom: 10,
                };
                map = new google.maps.Map(document.getElementById('map1'), myOptions);
                setMarkers(map,myMarkers.markers);
            }
           
            function setMarkers(map,markers) {
                var marker, i;
                for (i = 0; i < markers.length; i++) {
                    var lat = markers[i].latitude;
                    var long = markers[i].longitude;
                    var content =  markers[i].balloon_text;
                    var icon =  markers[i].icon;
                    latlngset = new google.maps.LatLng(lat, long);
                    var marker = new google.maps.Marker({
                        map: map,
                        title: content,
                        position: latlngset,
                        icon: icon
                    });
                    var infowindow = new google.maps.InfoWindow()
                    google.maps.event.addListener(marker, 'click', (function  (marker,content,infowindow) {
                        return function() {
                            infowindow.setContent(content);
                            infowindow.open(map,marker);
                        };
                    })(marker,content,infowindow));
                }
            }
           
            google.maps.event.addDomListener(window, 'load', initialize);
            jQuery(document).on('click', '.map-open', function(event) {
                event.preventDefault();
                map.setCenter(
                    new google.maps.LatLng(jQuery(this).data('lat'),  jQuery(this).data('long'))
                );
            });
        });
    </script>
       
    <div class="location-map" id="map1"></div>