Not Showing on Front End?

I have an MB Block and the template file to display the block is not showing on the front end. Do I need to do anything with my theme? The template.php in render_template is showing on the back end (in Gutenberg).

add_filter( 'rwmb_meta_boxes', function( $meta_boxes ) {
	$meta_boxes[] = [
		'title' => 'My Post Picker',
		'id'    => 'my-post-picker',
		'type'  => 'block', // Important.
		'icon'  => 'admin-post', // Or you can set a custom SVG if you don't like Dashicons
		'category' => 'text',
		//'mode' => 'edit', //The default mode of the block: edit to make it shows the edit fields when loaded, preview (default) to show the rendered HTML when loaded.
		'context' => 'side', // The block settings will be available on the right sidebar.
		'render_template' => get_stylesheet_directory() . '/blocks/template.php', // The PHP template that renders the block.
		// Now register the block fields.
		'fields' => [
			[
				'id'   => 'vpp_post',
				'type' => 'post',
				'name' => 'Link:',
				'post_type' => ['post','page','attachment'],
				'field_type'  => 'select_advanced',
				'query_args'  => [
					'post_status'    => ['any'],
					'posts_per_page' => - 1,
				],
			],
		],
	];
	return $meta_boxes;
});