Need help showing multiple posts from taxonomy.

I’m having trouble displaying multiple posts connected to my taxonomy. I tried adding: 'posts_per_page' => '-1',to the array, but it didn’t work. Please advise. Thank you!

<div class="container-fluid section-with-search section-dark">
	<div class="row mm-grid">
                    <?php
                    $the_query = new WP_Query( array(
                        'post_type' => array('video-index'),
                        'tax_query' => array(
                            array(
                                'taxonomy' => $term->taxonomy,
                                'field' => 'slug',
                                'terms' => $term->slug,
                            ),
                        ),
                    ) );

                    ?>

                    <ul class="post-list">
			<li>
			<a class="post-title" href="<?php the_permalink(); ?>" rel="bookmark" title="Permanent Link to <?php the_title_attribute(); ?>"><?php the_title(); ?></a>
			<?php if ( has_post_thumbnail() ) : ?>
			<a href="<?php the_permalink(); ?>" title="<?php the_title_attribute(); ?>">
			<?php the_post_thumbnail(); ?>
			</a>

			<?php endif; ?>
			</li>
		</ul>
	</div>
 </div>