Call to a member function have_posts() on a non-object

I have a WP_Query object that is trying to query sticky posts. I have one after the other in fact, one queries stickies and the second queries none-stickies.

<?php

	/** Grab the sticky post ID's */
	$sticky = get_option('sticky_posts');

	/** Query the sticky posts */
	$args = array(
	    'post__in'          => $sticky,
	    'posts_per_page'    => 3,
	    'cat'         		=> 210
	);
	$sq = new WP_Query($args);

	/** Count the number of post returned by this query */
	$sq_count = $sq->post_count;

	/** Output your sticky posts */
	get_template_part('loop', 'feed-videos-sticky' );

	/** Check to see if any non-sticky posts need to be output */
	if($sq_count < 3) :

	    $num_posts = 3 - $sq_count;

	    /** Query the non-sticky posts */
	    $sticky = get_option('sticky_posts');
	    $args = array(
	        'post__not_in'      => $sticky,
	        'posts_per_page'    => $num_posts,
	        'cat'         		=> 210
	    );

	    $nq = new WP_Query($args);

	    /** Output your non-sticky posts */
	    get_template_part('loop', 'feed-videos-sticky-none' );

	endif;

?>

And inside my (first) loop file I have the following:

<?php global $sq; ?>

<?php if ( $sq->have_posts() ) : ?>

	<?php while ( $sq->have_posts() ) : ?>

		<div class="grid_4 video">

			<a href="<?php the_field('video'); ?>" data-fancybox-type="iframe">

				<span class="title">
					<h5><?php the_title(); ?></h5>
				</span>
				<span class="play"></span>

				<img src="<?php echo getPostThumbnailUrl('video'); ?>" alt="<?php the_title(); ?>" />
			</a>
		</div>

	<?php endwhile; ?>

<?php endif; ?>

<?php wp_reset_postdata(); ?>

But I keep getting this error on the frontend:

Fatal error: Call to a member function have_posts() on a non-object in /Library/Server/Web/Data/domains/…/loop-feed-videos-sticky.php on line 3

If I echo gettype($sq); it gives me a value of NULL

I’ve globalised the variable however, so I’m not sure what else I can do? Could there be some problems with the arguments in my query?