Can't display custom fields in my custom post type page

Hi, I’m a CPT newbie.

I’ve made a custom post type named “event” in CPT UI and added some fields to it using custom fields.
Then I’ve created a page named “single-event.php” in my theme’s folder and added the following code, but nothing is being displayed and also I can’t see any errors in my logs.

What I’m doing wrong?

(Fields ‘event_name’ and ‘start_date’ are my generated fields using custom fields)

<?php
/**
* Template Name:events
*
* @package sparkling
*/

get_header(); ?>

<div id=”primary” class=”content-area”>

<main id=”main” class=”site-main” role=”main”>

<?php
$args = array( ‘post_type’ => ‘events’, ‘posts_per_page’ => 10 );
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();
the_title();
echo ‘<div class=”entry-content”>’;
the_field(‘event_name’);
the_field(‘start_date’);
echo ‘</div>’;
endwhile;

?>

</main><!– #main –>
</div><!– #primary –>

<?php get_sidebar(); ?>
<?php get_footer(); ?>

Thanks,
Kasra