maps marker doesnt work

Hi There, I’ve trying to use the maps marker plugin, but it seems not working properly. They said something about FOOTER.PHP


<?php wp_footer(); ?>

So please check first within your template (e.g. wp-content/themes/YOUR_TEMPLATE_NAME/footer.php) if the function wp_footer() is present and if not, please add it to your theme as many other plugins and WordPress itself also depends on it.


______MY BLOG DETAILS

WordPress Version: 4.5
URL: http://www.postransludus.com
Installed Theme: Brooklyn
Theme Version: 3.3.3
PHP Version: 5.2.17
Installed Plugins:
akismet/akismet.php
contact-form-7/wp-contact-form-7.php
easy-theme-and-plugin-upgrades/init.php
google-analytics-for-wordpress/googleanalytics.php
jetpack/jetpack.php
leaflet-maps-marker/leaflet-maps-marker.php
revslider/revslider.php
simple-facebook-connect/sfc.php
twitter-goodies-widgets/twitter-goodies-widgets.php
ut-portfolio/ut-portfolio.php
ut-pricing/ut-pricing.php
ut-shortcodes/ut-shortcodes.php
ut-twitter/ut-twitter.php
wordpress-seo/wp-seo.php