Get flexible modules in use

flexible_modules.php

<?php
/*
* Displays an array of used modules
*/
function display_used_modules() {
    //Name of the flexible content field
    $flexible_content_field_name = 'modules';

    echo 'Used modules <br />';

    /*pass your search string here example like this ( 's'=>'test' ) */
   $args=array(
        'posts_per_page'   => -1,
        'post_type'        => 'page',
    );

   $query=new WP_Query($args);

    if( $query->have_posts()): 

        $layouts = array();

        while( $query->have_posts()): $query->the_post();

        {
            $post_id = get_the_ID();
            $modules = get_field($flexible_content_field_name, $post_id);
            if(is_array($modules)){
                $module_layouts = array_column($modules, 'acf_fc_layout');
                foreach ($module_layouts as $layout) {
                    if (!in_array($layout, $layouts)) {
                        $layouts[] = $layout;
                    }
                }
            }
        }

        endwhile;

        print_r($layouts);

    echo 'Total posts: ' . $query->found_posts;

    endif;

    die;
}
add_action('init', 'display_used_modules', 10, 0);