How to add DIV to output?

Please direct me to how to add divs around the “date” “title” “excerpt”. I thought it would be easy to add the div as seen below but that didn’t work.

Here is the code I am adding to the functions.php:

function display_posts_order( $output, $atts, $image, $date, $title, $excerpt, $inner_wrapper ) {

	// Now let's rebuild the output.
	$output = '<' . $inner_wrapper . ' class="listing-item">' . $image . '<div class="post-content">' . $date . $title . $excerpt . '</div>' '</' . $inner_wrapper . '>';

	// Finally we'll return the modified output
	return $output;
}
add_filter( 'display_posts_shortcode_output', 'display_posts_order', 10, 7 );

Thanks!

https://www.ads-software.com/plugins/display-posts-shortcode/